Full opinion text
Opinion MOSK, J. Petitioner Herman G. Martin was convicted of conspiracy to commit extortion (Pen. Code, §§ 182, 518), conspiracy to commit assault with a deadly weapon (id., §§ 182, 245, subd. (a)), assault (id., § 240), and murder in the second degree (id., § 187); he was found to have committed the conspiracy offenses and the murder while armed with a firearm (id., § 12022, subd. (a)). He was sentenced to a prison term of 15 years to life for the murder with a 1-year firearm enhancement, the sentences for the other offenses being stayed or ordered to run concurrently with the sentence for murder. Martin petitions for a writ of habeas corpus. He rests his claim to relief on two grounds among others. The first is prosecutorial interference with his constitutional right to present the testimony of witnesses at trial. The second is what may broadly be referred to as the prosecution’s introduction of false evidence—specifically, the introduction by the prosecution of false evidence substantially material on the issue of guilt, and the nondisclosure by the prosecution of inducements offered for the testimony of certain witnesses. To assist this court, we appointed the Honorable Gerald Brown, Presiding Justice of Division One of the Fourth District of the Court of Appeal, Retired, as referee to take evidence and make findings of fact and conclusions of law regarding petitioner’s claims. Following a lengthy hearing, the referee filed his report. He determined that the prosecution had indeed interfered with petitioner’s constitutional right to present the testimony of witnesses at trial. He also determined that the prosecution had introduced against petitioner false and substantially material evidence and had failed to disclose inducements it had offered certain witnesses for their testimony. As we shall explain, we adopt the referee’s determination that the prosecution interfered with petitioner’s right to present the testimony of witnesses, conclude that petitioner has established his claim to relief on that ground, and determine that the appropriate disposition is vacation of the judgment of conviction. Accordingly, we will grant the petition. I. Prior Proceedings A. Facts On the night of May 12, 1981, Kathleen (Cass) Piascik drove Andrew Powell, who was employed by petitioner at Anear Insurance Company, to 2574 Caminito Muirfield in the Windemere Development in La Jolla to visit Richard Crake. Powell was carrying a briefcase which contained a sample insurance policy and a broken, but not inoperable, revolver. Powell and Piascik reached the Windemere security gate about 8:45 p.m., were let in, and followed a car that turned out to be driven by Crake, who was returning home from an early dinner with his wife Katherine and his daughter, also named Katherine. After the Crakes entered their home, Powell and Piascik approached and rang the bell; Crake opened the door; Powell identified himself and stated he was there on insurance business; Crake asked whether the matter could not be handled at his office in the morning; Powell showed Crake a document he was carrying, Crake remarked it was only a sample insurance policy, and Powell sent Piascik back to the car ostensibly to get the proper documents. After Piascik left, Powell and Crake began to argue and were heard by Crake’s wife and daughter, who began to approach the front door from other parts of the house. As Crake’s daughter descended the stairs from the second floor, Crake tried to shut the door on Powell; Powell, however, overpowered him and entered the house. The men fought. Powell struck Crake on the head with the gun several times and shot him in the arm. Having arrived at the scene of the struggle by this time, Crake’s wife hit Powell and attempted to stop his attack. Powell lost control of the gun, and the weapon landed on the other side of the room. As he went to retrieve it, Mrs. Crake pushed him, he pushed her back, she fell to the floor, and he picked up the gun and shot at her but missed. Meanwhile, Crake’s daughter had been throwing books and shoes at Powell from the stairs. She succeeded in hitting him in the head with her wooden clogs. Apparently staggered by the blows, Powell, who was by now covered with blood, backed out of the house, ran to the car, and was driven away by Piascik. Crake died later that same evening as a result of the injuries he sustained in Powell’s attack. On May 13, 1981, Powell was arrested. He was charged with murdering Crake and with assaulting Mrs. Crake with a deadly weapon. On September 2 and 15, 1981, he made statements to the San Diego District Attorney’s office. In those statements he claimed that in doing what he did, he was acting as petitioner’s agent. B. Pretrial and Trial Evidently on September 15, 1981, as a result of Powell’s statements, petitioner was arrested. Charged with conspiracy to commit extortion, conspiracy to commit assault with a deadly weapon, murder, and assault with a deadly weapon, he pleaded not guilty. Prior to trial petitioner moved to exclude from the prosecution’s case-in-chief any evidence that might show he was a federally protected witness. As the record on habeas corpus reveals, petitioner had been a volunteer operative for the federal government, and had spearheaded an undercover operation to penetrate organized crime’s infiltration of certain legitimate businesses on the East Coast; as a result of his participation in this operation he entered the Federal Witness Relocation Program, and he and his family were provided with a new identity and were relocated. In response to the motion, the court instructed the prosecutor, James D. Pippin, not to “go ... in detail” into petitioner’s status as a federally protected witness in his opening statement. It also instructed him, in effect, to introduce evidence on the point only to the extent necessary. Trial commenced on February 24, 1982. The sole question seriously at issue was not what Powell did on the night of May 12, 1981, but on whose behalf he acted. Even before trial began it was apparent that Powell’s testimony would be crucial: as prosecutor Pippin stated during pretrial proceedings, “[Powell’s] credibility is what this case is going to be all about.” It was the prosecution’s theory that petitioner had a motive to harm Crake, directed Powell to Crake’s home on the night of May 12, 1981, to at least threaten harm, and thereby initiated the chain of events that ended in Crake’s death. Specifically, the theory was as follows: for almost four years, petitioner had been embroiled in civil litigation with Crake, claiming that Crake had defrauded him of $100,000 in a real estate transaction in San Diego; by the end of April 1981, the litigation had reached a critical stage and presented petitioner with undesirable options; facing such a situation, petitioner sent Powell to “strong arm” Crake and “collect” the $100,000 “debt”; Powell confronted Crake, Crake resisted, Powell beat him, and Crake died as a result of the blows. In his opening statement, prosecutor Pippin asserted the evidence would show that in spite of the fact that Powell was a murderer, his testimony was worthy of belief. “The evidence is going to show that. . . [Andrew Powell] was prosecuted for the murder of Richard Crake. He has been convicted for the murder of Richard Crake, and the evidence is going to show that it was Mr. Powell’s request that he was interviewed by members of the District Attorney’s staff, myself included, and that he made a statement that was reported by a court reporter, and that he was going to testify about. He is going to testify why he made that statement, and the evidence is going to show the statement was made not for—not for his benefit, not so that he could get a better deal, not so he could get some favorable treatment for the crimes for which he was being prosecuted, but that his motivation for giving the statement that he gave and that his motivation for testifying as he does is so that everyone responsible for the situation he is in is held responsible. ... [H] The evidence will show that at no time was any promise made to him for his testimony or any preferential treatment given him for his testimony.” In attempting to support his theory, the prosecutor presented evidence that falls into two broad categories, viz., evidence that petitioner had a motive to harm Crake (the motive evidence) and evidence that he instructed Powell to “strong arm” Crake and “collect” the $100,000 “debt” (the agency evidence). The story the motive evidence tells was generally not disputed by petitioner. It runs in substance as follows. On June 8, 1977, petitioner filed a complaint with the San Diego District Attorney, accusing Crake of defrauding him of $100,000 with regard to the real estate transaction in San Diego. On August 31, 1977, petitioner filed an action for damages in the San Diego Superior Court against, among others, Crake, developer George Friehl, and Friehl’s wife Georgeann (No. 403639). He alleged that the defendants had fraudulently induced him to guarantee a $100,000 loan, and sought $100,000 in principal and $50,000 in accrued interest as compensatory damages and $1 million in punitive damages. In October 1977 petitioner mentioned his dispute with Crake to Investigator John Armstrong 0f the San Diego District Attorney’s office. During the pendency of petitioner’s lawsuit, Crake filed a collusive action in Riverside Superior Court against the Friehls’s interest in the San Diego property. The Friehls did not appear. A default judgment was entered against them, and their interest in the property was expunged and transferred to Crake. On December 28, 1977, Crake and the other defendants in case No. 403639 filed a cross-complaint alleging that petitioner’s “loan” was usurious. The cross-complainants asked for general and punitive damages in the sum of $1 million. On April 11, 1978, petitioner again spoke with Investigator Armstrong about Crake and asked Armstrong to intercede in his behalf. Pursuant to his request, Armstrong spoke with Deputy District Attorney Robert O’Neil. After speaking with O’Neil, Armstrong told petitioner that if he wished the district]attorney to pursue the matter, he would have to answer some questions about his background and agree to testify at trial. Petitioner became angry and refused to answer any questions about his background, expressing a fear for his safety if certain information about him became known. On November 8, 1978, petitioner complained about Crake to Deputy District Attorney Charles Hayes. Hayes told petitioner that he had interviewed Crake and had been given certain information about his background. Hayes asked petitioner whether the information was true, specifically, whether lie had “connections” with the United States Department of Justice. Petitioner responded he had such “connections.” Hayes said he would have to answer some questions truthfully about his background before there would be an investigation. Petitioner refused. Hayes said he would not proceed to court with a witness who was not fully candid with him. Petitioner then left. On December 15, 1978, petitioner filed a quiet title action in San Diego Superior Court regarding the property (No. 427117). Crake filed a cross-complaint originally seeking $1 million in punitive damages from petitioner and his attorneys. In case No. 403639—the original litigation concerning the San Diego property—Crake personally took the deposition of petitioner. In the course of the deposition petitioner refused to answer certain questions about his background. Crake thereafter moved to compel answers to those questions. On February 22, 1979, and March 6, 1979, Crake took the deposition of petitioner in an American Arbitration Association case. In the course of the deposition, petitioner refused to answer questions about his background. Petitioner called Crake “devious” and said he was “driving” him to “an act of violence.” He said: “I can live with a bad investment. I cannot live with guys who try to beat me. I will not be beaten under any circumstance, no matter what the consequences are.” He also said that when “a man loses control of himself, anything can happen,” and that “it would be my pleasure” to physically beat Crake “as leverage,” “as the way we ought to stop any losses with you.” To clarify his previous statement, petitioner said: “You were intimating that I had in fact hired somebody for some other violence, and I am simply stating that, if it came between you and I, I wouldn’t hire anybody.” On September 14, 1979, the court entered an order in case No. 403639 compelling petitioner to answer Crake’s deposition questions about his background. In mid-April 1981—after a long delay attributable to petitioner’s poor health—the deposition was scheduled for May 18, 1981. On April 18, 1981, petitioner asked Assistant United States Attorney Robert Noel for his assistance in concealing his background at the forthcoming deposition. Petitioner said that if he was forced to answer Crake’s questions he would have to commit peijury. As a consequence of the order compelling him to answer Crake’s questions concerning his background, petitioner was left with three options: refuse to answer and run the risk of involuntary dismissal of his action as a sanction for his refusal; disclose the information and jeopardize his safety; and answer the questions falsely. Crake was killed on May 12, 1981—just six days before the scheduled deposition. Unlike the motive evidence, the agency evidence presented by the prosecution was vigorously disputed by petitioner. The only direct evidence that Powell was acting on petitioner’s behalf on the night of May 12, 1981, was provided by Powell himself. In August 1980, Powell testified, he was introduced to petitioner by Michelle Goff, who was Powell’s roommate and lover. She worked for petitioner’s firm, Anear Insurance Company. Around March 23, 1981, he went to work for the company; his job involved general office duties. At that time he was experiencing difficulty in making child-support payments, and believed that “if I were unable to make the payments, because I had been to court several times for this, that I would probably end up doing some time in custody, a couple of years in custody.” About April 3, 1981, as he and Goff were riding in petitioner’s Cadillac, petitioner asked whether he had “guts.” He replied in the affirmative. Petitioner then said, “Well, maybe we will see one day. I will see.” On April 6, 1981, petitioner reminded him of their April 3 conversation and asked whether he had ever heard of Richard Crake. He said he had not. Petitioner then stated that Crake was “no good,” had “swindled and bothered a lot of people,” and was “a no good son of a bitch”; he added that he had some dealings with Crake, that Crake owed him some money in connection with a real property transaction, and he was having difficulty collecting the debt. When Powell asked him why he was telling him about Crake, petitioner responded that he wanted him to see Crake to try to collect the money. On April 7, 19,81, Powell continued, petitioner asked whether he had thought about their conversation of the previous day. He said he had, but added he could not understand why he wanted him to get involved in the matter. Petitioner let him know he was aware of his child-support problems, and stated that if he wanted to keep his job and stay out of jail, he would listen to what he had to say. Petitioner then said “he wanted me to go to Richard Crake and try and collect $100,000, tell him that he wanted $100,000 that was owed to him, and he wanted me to beat him up.” Powell became angry, asked, “Why me?" and stormed out of the office. On April 10, 1981, petitioner showed Powell a photograph in which Crake and five other persons appeared. Powell had never seen Crake before. Petitioner tore off the portion showing Crake and gave it to him. Petitioner said he could contact Crake at his office in downtown San Diego, but he replied he would not go to Crake’s place of business. Petitioner then ended the conversation by stating that he would get Crake’s home address. When Powell went home that evening, he put the photograph in a dresser drawer. On April 13 or 14, 1981, petitioner dictated to Powell what he believed to be Crake’s home address, 6039 Caminito de la Costa, which was near the beach in La Jolla. He told Powell that he should be careful because Crake was “such a shady character that he probably had body guards.” He also said that Powell, who was Black, “would probably stick out like a sore thumb” in the neighborhood, which was predominantly White. For more than a week following this conversation, Powell continued, he did nothing in the hope that petitioner would forget about the matter. But petitioner then reminded him of their earlier discussion about his child support problems, threatened he would “blackball” him from employment in San Diego, and asked “when I was going to take care of business . . . .” On cross-examination, however, Powell admitted that on April 13, 1981, he had appeared in court on the child support matter and resolved the past difficulties. On April 29, 1981, Powell drove to the beach area and located the house he believed to be Crake’s at 6039 Caminito de la Costa. Around that date, he met Kathleen (“Cass”) Piascik, who was trying to obtain a job at Anear Insurance. About 6 p.m. on Friday, May 8, 1981, Powell continued, he again went to the Caminito de la Costa address. This time, however, he took Piascik, telling her he was going there to do some insurance business for petitioner. He took Piascik, who was White, “for easy access to—into the area.” They approached the front door of the house at 6039 Caminito de la Costa and rang the bell, but there was no answer. They went next door and a woman answered; he asked for the Crakes, but she said they had moved to the Windemere Development in La Jolla. He returned home about 7:30 p.m. Later that night he called petitioner and told him “that the address he had given me was the wrong address and that we had problems, that he almost got me in trouble, and that was it.” On Monday, May 11, 1981, Powell had two meetings with petitioner. At the first petitioner asked Clyde Harless, the owner of Corey Insurance, about Windemere, and Harless made some response. Petitioner, Powell said, was in the process of buying Corey Insurance, and had already obtained some of that company’s records. Petitioner also made some inquiry to Michelle Goff apparently about Corey Insurance documents relating to Windemere. After his exchange with Harless, petitioner made a telephone call and obtained the address at 2574 Caminito Muirfield. He then dictated the address to Pówell, and the meeting ended. Later that day, petitioner and Powell met for a second time. At that meeting, Powell said, “He gave me the keys to his car and told me to go down to the car, that a friend of ours had left a—left something for us in the car.” Powell went down to the car, found a brown bag inside a box in the trunk, determined that it contained a gun, and put the bag in Michelle Goff’s vehicle, which he was using at that time. He then returned the keys to petitioner and asked, “was that necessary[?]” Petitioner said it was, and reminded him that Crake “probably has bodyguards” and “it is for your own protection.” With that statement, apparently, the second meeting ended. Later that day Powell called Piascik to arrange to meet on the following day. On May 12, 1981, Powell continued, he told Piascik he had some insurance business to take care of with Crake and asked her to drive him to Crake’s house in Windemere; she agreed. She picked him up that night; he carried a briefcase in which he had placed a manila folder containing a sample insurance policy and the gun he had allegedly obtained from petitioner. On the way to Windemere, he told Piascik he was going to Crake’s home on petitioner’s behalf to talk with him about petitioner’s $100,000 and to beat him up. He then asked whether that fact “ma[d]e her nervous, you know, did she want to back out under those circumstances.” She said, “No.” Powell then described the events immediately preceding his encounter with Crake, the encounter itself, and the events following. Although less unfavorable to him than the facts as stated above, his description is not substantially different. When he returned home to the apartment he and Michelle Goff shared, Powell continued^ he changed his blood-stained clothes and cleaned himself up; Goff was not ¡there. He then called petitioner and told him that “his dirty work had been done.” Later that night, Goff returned. Accompanied by her, he threw away the jacket he had worn and wrapped the gun in a plastic bag and placed it in a dumpster. He and Goff then went to pay a social visit on a friend, Maria Pulido. The next morning he was arrested. At the end of direct examination, Powell effectively denied that he had received any inducements from the prosecution to testify. To the question posed by prosecutor Pippin, “Do you have any—is your testimony here based on any motivation that it is going to benefit you in any way?” Powell responded, “No, sir.” Although Powell’s testimony constituted the only direct evidence that he was acting as petitioner’s agent on the night of May 12, 1981, it was not the only evidence tending to establish the fact. To begin with, Powell’s story was corroborated directly or indirectly by the testimony of other witnesses. In general, Kathleen Piascik described the events in which she was involved much as Powell had described them. But she also gave the following testimony on direct examination. “[By Mr. Pippin:] Q. On the way to Windemere, did [Powell] tell you that he was going there because Herman Martin had sent him? [fl] A. No. [If] Q. Did he tell you he was going to beat somebody up? [1f] A. No. [fl] Q. Did the two of you have a conversation about whether or not he wanted to do this and whether or not he should do it? [1J] A. Whether he should beat someone up? [1f] Q. Yes. [fl] A. No, absolutely not. [H] Q. Had anything been said that led you to believe anything illegal or unlawful was going to take place? [fl] A. No.” Michelle Goff testified that sometime in mid-to late April 1981 petitioner said “he was going to fire Andrew Powell for not taking care of business.” On cross-examination she stated that in April or May of that year Powell said jokingly that petitioner “wanted [him] to kick someone’s rear end or words to that effect.” She further testified on direct examination that on either May 8 or 11, 1981, while petitioner was meeting with Powell in his office, he asked whether she had a homeowner’s list for the residences at Windemere. She also recalled that on the night of May 12, 1981, Powell placed a plastic bag containing an item unknown to her in a dumpster. Goff further testified that on May 13, 1981, petitioner called his attorney, Leslie Osborne, told him “the boyfriend of one of his employees had a problem,” and asked for a referral; she then got on the telephone, described the situation Powell found himself in, and was referred to Nelson Brav; she spoke with Brav but never discussed a fee; on May 15, 1981, petitioner told her Brav wanted a $5,000 retainer and $100 an hour. As the evidence reveals beyond genuine dispute, the following week Brav brought Powell a check in the amount of $17,500 to endorse; the check was drawn on the account of Osborne’s law firm and signed by Osborne; Osborne never talked with Powell, did not owe Powell any money, and was never paid back by Powell. The record on habeas corpus establishes that petitioner’s wife lent Powell the money. On cross-examination, however, Goff gave testimony that tended to undermine the truth of Powell’s story. First, she stated she believed Powell was a liar. Second, she said that she had never seen a picture in any dresser drawer in the apartment she and Powell shared, and specifically that she had never seen the photograph of Crake described by Powell in his testimony. Third, she stated that when she asked Powell why he had taken Piascik with him on the night of May 12, 1981, “he told me because Cass knew Crake and they had business dealings.” Maria Pulido testified that Powell and Goff paid her a social visit late the night of May 12, 1981. She stated that around 7 or 8 a.m. on May 14, 1981, Powell called her from jail. During their conversation he said words to the effect that “Cass was with him that night and that, it is not fair that she is released and he is in custody.” James Murphy, who was employed as a Deputy United States Marshal at the time of the killing and was evidently a friend or close acquaintance of petitioner, testified in part as follows. On May 11, 1981, petitioner asked him to obtain Crake’s address and telephone number. To prosecutor Pippin’s question, “Did he say what he wanted it for?” he responded, “Had something to do with Crake’s lawsuit. He was trying to serve some papers in the Crake lawsuit, and somehow I—it just had something to do with the Crake lawsuit.” Between 3 and 4:30 p.m. that same day, Murphy said, he obtained the address, called petitioner at his office, and gave it to him. On May 13, 1981, Murphy continued, he called petitioner and said they had to talk: he knew that Crake had been killed and that Powell had been arrested. Petitioner invited him to his office. At this point, the following colloquy ensued. “[By Mr. Pippin:] Q. Did you talk to Mr. Martin about the time that you had given him Crake’s address shortly before Crake was killed? []f] A. Yes. I was concerned about that. [If] Q. What did he say in response to your concern? fl[] A. He told me that he was concerned about my job. You know, that the fact that I had come in there from the agency, and he was also concerned about the fact that he might be considered as a suspect because of statements that he had made, prior statements that he had made in a civil litigation that they had going on. “Q. What did he tell you—did he say something about Mr. Powell? [fl] A. Yes, he did. fl[] Q. What did he say? [ÍJ] A. He said that he had sent Powell out to, or that Powell had gone out to serve some papers or in the Crake lawsuit or whatever. And that he was—apparently Powell had gotten in an altercation with Crake, because Crake had probably called him a nigger or something, and Powell was very high-strung and probably, I don’t know, beat him or whatever. I don’t know. [U] Q. That is what Martin said probably happened; is that right? [H] A. Right, ffl] Q. So he did tell you he sent Powell out to Crake’s house? [fl] A. Right. Okay. Yes.” Clyde Harless, the owner of Corey Insurance, testified that on May 13, 1981, petitioner told him and two other persons during a discussion of the Crake killing: “Yes, I heard about the incident. He owes me some money. I expect the police here any minute.” About two days after the killing, Harless stated, “Mr. Martin asked me if I knew bail procedures. And I said, ‘No.’ He said ‘Well, if the bail for Andy Powell is not too high, I will put my home up as collateral for bail.’” Finally, Steven Jarrett, who was a trusty in the San Diego County jail at the time petitioner was in custody, testified to a statement petitioner allegedly made to him “He told me that the case was more or less a big mess, and there was two Black inmates in the jail that were friends or associates of Mr. Powell’s and that it could all be cleared up if these two guys would testify in his behalf that they gave or sold Mr. Powell the gun and that he would give them both $5,000 and bail them out if they would do this. I don’t know who these two guys were.” Jarrett was then called on to explain when he had first made the substance of this conversation known to the prosecution and the circumstances under which he had done so. The following colloquy is relevant. “[By Mr. Pippin:] Q. When did you make this information known? [1f] A. Last Monday, [fl] Q. What caused you to make it known last Monday? []}] A. I am at M.C.C. [i.e., the federal Metropolitan Correctional Center in San Diego], and I am segregated from everyone, and they have to take me to court separate from everybody else, and Mr. Powell, who I didn’t know that was him at the time, they had—he is—you know, in the same situation more or less, and they called my name. I was in one cell, and he was in another cell to be taken to court. They called both our names, and they chained us up and put us in the Sheriff’s van to bring us over here. I asked him, ‘Are you the one involved in the Martin case?’ And he said, ‘Yes.’ « “Q. you first met Mr. Powell a week or so ago? [fí] A. Last Monday on the way to court here.” Jarrett admitted that he was then in custody facing charges, and that he had suffered two or three convictions for theft-related felonies. But to prosecutor Pippin’s question, “Had you been made any promises for leniency or any favorable treatment for giving your testimony?” Jarrett responded, “None.” Powell’s testimony was corroborated not only by the testimony of other witnesses but also by undisputed evidence of the sequence of events leading up to and immediately following the killing of Crake—especially telephone calls made from Powell’s home to petitioner’s on May 8, 1981, and May 11, 1981. Specifically, at 9:24 p.m. on Friday, May 8, 1981—after Powell and Piascik had allegedly gone to Crake’s former address at 6039 Caminito de la Costa in La Jolla—a telephone call, which lasted 60 seconds or less, was placed from Powell’s home to petitioner’s. On Monday, May 11, 1981, petitioner sought and obtained Crake’s new address from Murphy. Around 9 p.m. on Tuesday, May 12, 1981, Powell subjected Crake to the attack that would result in his death. At 9:51 p.m. a telephone call, which again lasted 60 seconds or less, was placed from Powell’s home to petitioner’s. After the prosecution rested, the defense moved for judgment of acquittal under Penal Code section 1118.1 on the ground of insufficiency of the evidence. In denying the motion, the trial judge, Donald W. Smith, observed that the testimony of Powell was crucial. “I suspect, if [the jury] didn’t find [that there is sufficient evidence, independent of Powell’s testimony, to connect petitioner to the crimes], they wouldn’t convict him, because obviously, the People are relying on the murderer as their chief tie-down witness. If they don't believe him—they are not going to convict [petitioner]. ” (Italics added.) The defense theory was that on the night of May 12, 1981, Powell acted on his own and not as petitioner’s agent. The theory rested in substance on two bases. The first was that Powell’s story implicating petitioner was in part inherently unbelievable and in part demonstrably false. The second was that Powell or at least Piascik had had some independent dealings—perhaps drug dealings—witii Crake, and that the pair went to Crake’s home on the night of May 12, 1981, to conduct their own business. Called as the first witness on behalf of petitioner, Stephen Aguilar testified in part as follows. While working together as salesmen at Harrison Buick in National City in 1979 or 1980, he and Powell became friends. Around March 9, 1981, Powell called him in the morning at Harrison Buick and asked whether he would like to make $1,000; he answered yes; Powell, however, did not expand on his offer. On May 11, 1981, Powell again called him at Harrison Buick and again asked whether he would like to make $1,000; this time, however, he asked whether he could get him an “unmarked gun”; Aguilar answered, “Sure,” and asked no questions. About 1 or 1:30 p.m. that same day, Powell came by Harrison Buick in a Cadillac. Powell drove Aguilar to his apartment; Aguilar went in to get the gun—a loaded Blackhawk .357 magnum revolver that was “missing the two decals on both sides and the little clipping on the cylinder”; he came out with the gun in a brown paper bag, and handed it to Powell; Powell placed the gun in the trunk, then drove him back to Harrison Buick. About 8:30 a.m. on May 13, 1981, Aguilar continued, Powell again called him at Harrison Buick and asked him to come to his apartment and pick up the gun. He got to Powell’s home about 9 or 9:30 a.m. Powell went into his garage, returned with the gun in a brown paper bag, told him he had washed it with soap and water, and promised to pay the $1,000. He asked, “What happened? What did you use it for?” Powell replied, “You will see it in the newspaper.” Aguilar took the gun, returned home, and left the weapon in his apartment. On May 14, 1981, Aguilar learned about Crake’s murder and Powell’s arrest and became worried. He kept the gun in in his apartment for a week or so and then disposed of it one night in a dumpster behind the Food Basket market in National City. On cross-examination, Aguilar was asked about the source of the gun. The following colloquy is relevant. “[By Mr. Pippin:] Q. Where did you get the gun from? [fl] A. From a friend, [fl] Q. Who? [íj] A. I would rather not say. [ft] Q. I don’t care if you would rather not say. Who did you get the gun from? [1|] A. I would rather not say. “Mr. Pippin: YOUR Honor, would you direct the witness to answer the question? “The Court: YOU are directed to answer the question. Do you understand that? “The Witness: YES, sir. “The Court: FINE. Answer the question. “The Witness: A gentleman by the name of Charles Riley. “By Mr. Pippin: Q. Charles Riley? [fí] A. That’s correct, [fí] Q. Where does Charles Riley live? [fí] A. In the same complex that I live in.” As the record on habeas corpus establishes, this testimony constituted the first information either party received concerning the existence of Charles Riley and his possible involvement in the case. As the cross-examination continued, Aguilar revealed that he knew Riley had a handgun and a shotgun; after he spoke to Powell on the telephone on the morning of May 11, 1981, he asked Riley whether he could borrow his revolver, and said he would pay him $300 when he received the money he was to get; Riley asked, “What is it for?” and he answered, “I have no idea”; Riley then accepted the offer and gave him the gun; sometime after May 12, 1981, Riley came to believe his gun had been used in the Crake killing and advised Aguilar to throw it away; he then demanded the $300 Aguilar had promised, Aguilar unsuccessfully attempted to raise the money, and Riley took Aguilar’s reel-to-reel tape deck in its place. Immediately after he left the stand and passed through the courtroom doors, Aguilar was arrested in the hallway as an accessory to murder by prosecution investigator Lawrence K. Wilson. The arrest took place in the presence of prospective defense witnesses Michelle Goff, Maria Sharpe, and Cynthia Rosenthal, and at least one representative of the press. At the reference hearing Wilson admitted he knew Goff and Rosenthal were present when he made the arrest. The following day, Aguilar was released on his own recognizance on the recommendation of prosecutor Pippin. As the record on habeas corpus reveals, Aguilar was evidently never charged. Charles Riley was called as a witness for petitioner. The prosecutor had refused Riley’s request for immunity; petitioner then unsuccessfully moved the court to grant immunity. In response to defense counsel’s question, he gave his name and address and then stated: “I refuse to answer any further questions on the Fifth Amendment.” Riley would have corroborated Aguilar’s testimony that he was the source of the gun. Eugene Wallace was also called as a witness for petitioner. The prosecutor again refused a request for immunity and petitioner again unsuccessfully moved the court for a grant of immunity. In response to defense counsel’s question, Wallace gave his name. Counsel then asked, “Mr. Wallace, did you have occasion to meet Andrew Powell?” and Wallace responded, “I respectfully stand on the Fifth Amendment.” Wallace would have testified, in part, that while he and Powell were cellmates in the summer of 1981, Powell admitted petitioner was not involved in the killing; he would also have testified that with his help Powell fabricated the story implicating petitioner in the crime. John Donald Gross was also called as a witness for petitioner. The prosecution again refused a request for immunity and petitioner again unsuccessfully moved the court for a grant of immunity. Except for admitting that he knew Powell, Gross invoked his Fifth Amendment privilege and refused to testify. Gross would have testified that while he and Powell were in jail together in the summer of 1981, Powell admitted petitioner was not involved in the killing; that he also admitted he received the gun from Aguilar; and that with Wallace’s help he fabricated the story implicating petitioner. Cynthia Rosenthal testified that at all relevant times she worked as a receptionist at Anear Insurance. Shortly after Powell came to work for the firm in March 1981, he began to receive telephone calls from Piascik, sometimes as many as two or three a day. About 11:30 p.m. on a day in April 1981, Rosenthal received a call at home from Powell. “He asked if I would like to come over to a person’s house—didn’t give me a name. Him and Cass were over there, and they were entertaining. He was a prominent attorney, and if I wanted to go over for a social visit. . . . [He]. . . told me where the place was in La Jolla and that I would have to go through security gates in order to get in.” Rosenthal also testified that one day at work during April 1981 Powell asked whether she could locate a gun for him. Called as a witness on petitioner’s behalf, Michelle Goff stated that, as Powell had testified, she and Powell rode with petitioner in his Cadillac on April 3, 1981. Asked, “At any time in that conversation in the car was anything said concerning, by Mr. Martin, concerning the guts of Mr. Powell or the manhood of Mr. Powell?” she answered, “No.” Asked, “At any time in any conversation when you and Mr. Martin and Mr. Powell had been present, did Mr. Martin ever make any comments like that?” she again answered, “No.” Petitioner’s teenaged son testified that between 8 and 10 p.m. on May 8, 1981, the telephone at the family home rang. “I picked up the receiver, said, ‘Hello.’ The person on the other side said, ‘Is Mr. Martin there?’ I asked, ‘Who is calling?’ He said, ‘Andy.’ I said, No, he is not. He is next door.’ He said, Thank you.’ I said, ‘Goodbye.’” Marcia Sharpe, petitioner’s daughter, testified that at 9:51 p.m. on May 12, 1981—the time at which Powell claimed he called petitioner at home and told him “his dirty work had been done”—she and her husband were dining with petitióner and his wife at a restaurant in Escondido. Sharpe’s husband corroborated her testimony. Petitioner presented evidence to show that the 9:51 p.m, telephone call may have been received by his housekeeper, who spoke no English. Called as a witness on behalf of the defense, James Murphy changed his previous testimony about his May 13, 1981, conversation with petitioner. He testified in part as follows. “[By Mr. Mitchell:] Q. First, what did Mr. Martin say as you remember it now? [H] A. On the 13th? [H] Q. Yes, sir. [H] A. He stated that—he called him ‘Andy,’ that Andy had went to Crake’s residence with some papers and apparently there had been an altercation, and he said probably—he said Crake probably called him a nigger or something like that, and Andy was very high-strung and that he probably, you know, started beating on him. [H] Q. Can you explain for us the difference in your testimony today as compared to thejlast time you testified? [1f] A. Yes. When I said—when I used the word ‘sent,’ that Mr. Martin had sent Powell, is because I had assumed that he had sent Powell, because in February or March Martin had called me—” 1 Because of an objection on the part of the prosecution, Murphy was prevented from completing his answer. If he had been allowed to finish, he would have stated that in February or March petitioner called him for help in serving papers in his litigation with Crake. On cross-examination Murphy admitted that his previous testimony was consistent with a statement he gave to the prosecution in September 1981 and with his testimony at petitioner’s preliminary hearing. He further admitted that he realized his previous testimony needed correction only after he had been queried on the matter by defense counsel. In his closing argument, prosecutor Pippin attempted to bolster the credibility of Powell. He stated: “[E]ither Herman Martin purchased Aguilar’s testimony just like he tried to do the people in the jail, or the State purchased some perjury from Andrew Powell by giving him some breaks, some favor, some deal to come in and testify against Herman Martin, whatever it might be. He wasn’t given any. There is no evidence that he was given any kind of deal for his testimony.” (Italics added.) Admitting that “it is real easy to downgrade Andrew Powell and show that he is a liar,” Pippin argued that even if Powell’s testimony was rejected out of hand, the other prosecution evidence, including the May 8 and 12, 1981, telephone calls from Powell’s home to petitioner’s, was sufficient to support a conviction. At one point in his closing argument Pippin introduced a theme suggested by the cover of a novel entitled The Godfather. He began: “Well, I want to talk about the credibility of some witnesses for a little while, and I am reminded of a popular book that came out a few years ago, and it was also a successful movie; a book called The Godfather. I am reminded of that book, at least, the cover, the cover of that book. I don’t know if any of you read it, but the cover of that book has the name on it, and I can’t remember exactly what it is. It is either a hand or some figure, and there is strings going down to the words and the name, I think, like a puppet; like a person pulling the strings on a puppet. A vision of the cover of that book came to my mind when some defense witnesses testified in this case.” Pippin then proceeded to attempt to show that several important defense witnesses were petitioner’s “puppets,” and that they gave false testimony at petitioner’s direction. Defense counsel did not object. At another point, Pippin began to develop another theme that had Mafia overtones. He stated: “So, you know it is not hard in a case like this, in any conspiracy case, to run down the credibility of, or the character of, one of the coconspirators. People who conspire together to commit crimes are not decent, good, law-abiding, upstanding people. When one of them gets on the stand and testifies, it is easy to run down their credibility, [fl] Let me give you an example of a guy who has been in the press recently. Jimmy Fratianno. The guy has been a crook all his life. He has been a hit man. Okay? He has testified—” At this point defense counsel objected and moved for a mistrial. Pippin defended his comment as merely a permissible “argument by analogy.” The court denied the motion for mistrial, but instructed Pippin to “leave the analogy alone now.” After deliberating almost 22 hours over 5 days, the jury returned its verdict. It found petitioner guilty of conspiracy to commit extortion and conspiracy to commit assault with a deadly weapon, and found true the allegations that he was armed with a firearm in committing each of those offenses. It also returned a verdict of guilty of murder, determined the crime to be of the second degree, and found true the allegation that he was armed with a firearm in committing the offense. Finally, it found petitioner guilty of simple assault (Pen. Code, § 240)—rather than the charged offense of assault with a deadly weapon—and found the firearm allegation not to be true. The court sentenced petitioner to a term of 15 years to life on the murder count and added a 1-year firearm enhancement to run consecutively. As to each of the conspiracy counts, it sentenced him to three years and added a one-year firearm enhancement to run consecutively, but ordered the sentence stayed in accordance with Penal Code section 654. Finally, as to the assault count, it sentenced him to six months in county jail to run concurrently with the sentence imposed on the murder count. C. Appeal and Initial Habeas Corpus Petitions On appeal petitioner raised several contentions. He claimed, inter alia, that the court erred in refusing to grant immunity to Riley, Gross, and Wallace. He also claimed that prosecutor Pippin engaged in prejudicial misconduct on several occasions. Specifically, he complained that Pippin improperly attempted to link him to the Mafia in his examination of Deputy District Attorney Hayes, in his comments in closing argument referring to The Godfather, and in his remarks in closing argument attempting to analogize the testimony of Powell to the testimony of Jimmy Fratianno. Petitioner also complained that by arresting Aguilar when and where it did the prosecution interfered with his right to present the testimony that Riley, Gross, and Wallace would otherwise have given. On the eve of oral argument, petitioner filed in the Court of Appeal a petition for writ of habeas corpus together with a motion to consolidate the appeal and the habeas proceeding. He rested his claim to habeas corpus relief on two grounds among others. The first was that the prosecution interfered with his constitutional right to present the testimony of witnesses at trial. He alleged, in substance, that the prosecution intimidated Riley, Wallace, and Gross and thereby drove them from the stand. The second ground was the existence of evidence that was newly discovered and not reasonably discoverable at the time of trial, which undermined the entire prosecution case. He alleged that one Wallace Jackson would testify that with Eugene Wallace’s help Powell fabricated the story implicating him in the Crake murder, and that Powell received the gun not from petitioner but from Aguilar. In support of his allegations petitioner attached numerous exhibits, including declarations of Riley, Wallace, Gross, and Jackson. The exhibits also included official documents purporting to show the existence of inducements that the prosecution offered Powell and Jarrett for their testimony. After consolidating the appeal and the habeas corpus proceeding, the Court of Appeal affirmed the judgment and denied the writ. (People v. Martin (1983) 150 Cal.App.3d 148 [197 Cal.Rptr. 655].) As to the contentions on appeal the Court of Appeal held that prosecutor Pippin did not engage in prejudicial misconduct. Specifically, with regard to his apparent attempt to link petitioner with the Mafia in his examination of Deputy District Attorney Hayes, the court observed that on defense objection the question and answer were stricken, the prosecutor was admonished, and the jury was instructed not to consider material stricken from the record, and then concluded: “We assume the jury understood and applied this instruction.” (Id. at p. 166.) On Pippin’s reference in closing argument to The Godfather, the court reasoned, “Even though the illustration was unnecessary and may have been offered in bad faith, it does not amount to a dishonest act or an intent to persuade the jury by deceptive, reprehensible means. [Citation.] Furthermore, in order to preserve this argument on appeal an objection must be made when the comment is made in order to give the trial judge an opportunity to cure any harm caused by the comment. [Citation.] No such objection was made here and an admonishment could have cured any potential prejudicial effect of the illustration.” (Id. at pp. 166-167.) As to Pippin’s comment in closing argument attempting to analogize the testimony of Powell to that of Jimmy Fratianno, the court stated: “This incomplete analogy was abandoned after a bench conference and this limited comment could not in any way have affected the verdict . . . .” (Id. at p. 167.) The Court of Appeal also held that the prosecution did not interfere with petitioner’s right to present the testimony of Riley, Wallace, and Gross. “In this case there is no offer of proof nor [s/c] evidence the witnesses’ decision to not testify was based on any conduct attributable to the state .... Without conduct attributable to the prosecution there cannot be any wilful suppression of evidence.” (Ibid.) As to the habeas corpus petition, the Court of Appeal held that petitioner’s claim that the prosecution interfered with his right to present the testimony of Riley, Wallace, and Gross “ha[d] been dispensed with on the merits in the opinion on appeal. [Citation.] A potential witness’ assertion of the Fifth Amendment privilege against self-incrimination is not conduct attributable to the prosecution.” (Id. at p. 168.) The Court of Appeal also held that prosecutor Pippin had indeed “suppress[ed] . . . substantial material evidence concerning the credibility of chief witnesses”: Powell and Jarrett had been offered inducements for testimony; not only had the prosecutor failed to disclose the fact, but he also failed to correct the witnesses’ misleading testimony denying promises of lenient treatment, and even argued that “There is no evidence that [Powell] was given any kind of deal for his testimony.” (Id. at p. 169.) But Pippin’s misconduct, the court concluded, was not prejudicial: “We are satisfied that had the jury known the witnesses had been promised more lenient treatment in exchange for their cooperation, it would not have affected the verdict.” (Ibid.) Finally, the Court of Appeal held that petitioner’s newly discovered-evidence claim failed. “None of the information supplied by Jackson’s declaration constitutes evidence undiscoverable before trial. Both Jackson’s and Wallace’s declarations state they were cellmates along with Richard Tiebout and Powell during the defense investigation. The defense investigator interviewed Walláce and Tiebout and could just have [sic] easily interviewed Jackson. No new evidence which would have undermined the prosecutor’s case is presented and the potential witness was discoverable before trial.” (Id. at p. 170.) Petitioner applied for a writ of habeas corpus in this court. In that petition he made allegations, advanced arguments, and presented exhibits substantially similar to those of his petition to the Court of Appeal, but with a number of additions. The petition was denied. II. The Present Proceeding A. Procedural History On November 20, 1984, petitioner filed his petition in this proceeding. He rests his claim to relief on two broad grounds among others. The first involves prosecutorial interference with his constitutional right to present the testimony of witnesses at trial—specifically, the testimony of Charles Riley, Eugene Wallace, and John Gross. The second involves the introduction by the prosecution of false evidence, which includes both the introduction of false evidence properly so-called—specifically, the testimony of Andrew Powell—and the nondisclosure of inducements offered to Powell and Steven Jarrett. In support petitioner makes allegations similar to but substantially more specific than those of his earlier petitions. Attached to the petition are numerous exhibits. Many of these—including the declarations of Charles Riley, Eugene Wallace, John Gross, and Wallace Jackson—were attached to the previous petitions; several additional and more recent exhibits, however, are also attached. We issued an order to show cause. The Attorney General filed a return denying the allegations of the petition. He argued in essence that it was petitioner’s theory that the prosecution had entered into an elaborate conspiracy with Powell to convict a man it knew to be innocent, and that such a theory was inherently absurd. He also argued that the evidence presented by petitioner in support of his claim was obtained by money and threats. In his traverse, petitioner denied the allegations of the return, disclaimed reliance on a “conspiracy” theory, and denied he had obtained his evidence by either money or threats. On September 30, 1985, we appointed the Honorable Gerald Brown to take evidence and make findings of fact and conclusions of law responsive to the following questions raised by the petition: (1) Did prosecutorial misconduct interfere with petitioner’s right to present the testimony of witnesses at trial? (2) Was false evidence, substantially material or probative on the issue of guilt, introduced against petitioner at trial? The reference hearing opened on November 25, 1985, and closed on May 6, 1986. Before the referee by stipulation of the parties were the record of the trial and a number of documentary exhibits. The record of the evidence and argument presented at the hearing fills 26 volumes and totals nearly 5,400 pages. After the hearing the referee filed a lengthy and detailed report. To the first question, “Did prosecutorial misconduct interfere with petitioner’s right to present the testimony of witnesses at trial?” the referee gave the following answer: “Yes. Petitioner’s evidence as well as the evidence presented by respondent establishes intimidation of defense witnesses Charles Riley, Eugene Wallace and John Gross. Petitioner’s evidence was credible and established witness intimidation, [fl] As a result of this intimidation, none of these witnesses testified for the defense at trial although they had been subpoenaed to petitioner’s trial and were initially willing to testify. .. . [T]hese witnesses would have been petitioner’s most important defense witnesses by either impeaching Andrew Powell or by demonstrating Powell’s fabrication of his story and his motivation for doing so.” In giving this answer to the first question, the referee made a number of specific determinations, including the following. Initially, he concluded that the prosecution’s arrest of Stephen Aguilar immediately after he finished testifying on petitioner’s behalf and in the presence of defense witnesses was improper insofar as petitioner’s constitutional right to present testimony at trial was concerned. He next found that the prosecution had improperly threatened to charge Charles Riley with any crimes that his testimony might reveal, and that these threats, along with his knowledge of Aguilar’s arrest, caused Riley to refuse to give substantive testimony on petitioner’s behalf. The referee made a similar finding with regard to Eugene Wallace. He also found that John Gross refused to give substantive testimony on behalf of petitioner because he feared prosecutorial retaliation in a case then pending against him as a result of the arrest of Aguilar, the threats made to Wallace specifically, and the prosecution’s general attitude of hostility toward defense witnesses. To the second question, “Was false evidence, substantially material or probative on the issue of guilt, introduced against petitioner at trial?,” the referee gave the following answer: “Yes. Andrew Powell lied at petitioner’s trial. Among other things, he received the gun he used to beat Richard Crake to death from Ste[ph]en Aguilar and not, as he lied, from Martin. Powell lied at trial by concocting a story implicating Martin.” In giving this answer to the second question, the referee made a number of specific determinations. At the threshold, the referee found that Powell was a liar by nature: “Untruthfulness is a major component of Mr. Powell’s character.” He found that while in jail awaiting trial Powell fabricated his story implicating petitioner in the Crake murder with the assistance of Eugene Wallace and one Arthur Swait. He also found that Powell obtained the murder weapon not from petitioner, but from Stephen Aguilar who had himself obtained it from Charles Riley. The referee further found that the prosecution oifered Powell and Steven Jarrett inducements for their testimony, but failed to disclose such inducements. Finally, he found that Kathleen Piascik lied at petitioner’s trial when she testified that she had no notion anything unlawful was about to happen as she drove Powell to Crake’s home on the night of May 12, 1981. B. Merits of the Petition Petitioner contends that he is entitled to relief on habeas corpus on each of two grounds: interference on the part of the prosecution with his constitutional right to present the testimony of witnesses at trial, and the introduction by the prosecution of false evidence. In a habeas corpus proceeding, “The burden of proof is, of course, on the petitioner for the writ . . . .” (In re Riddle (1962) 57 Cal.2d 848, 852 [22 Cal.Rptr. 472, 372 P.2d 304], and cases cited.) “In order to secure habeas corpus relief, petitioner must allege and prove all the facts upon which he relies to overturn the judgment.” (In re Hawley (1967) 67 Cal.2d 824, 829 [63 Cal.Rptr. 831, 433 P.2d 919], fn. 3, and cases cited; accord, In re Riddle, supra, at p. 852.) As we shall explain, we conclude that petitioner has carried his burden on the witness-intimidation ground and hence that he has established his right to relief. Accordingly, we do not address the false-evidence ground. 1. The Law Under the Sixth Amendment to the United States Constitution, a criminal defendant has the right “to have compulsory process for obtaining witnesses in his favor.” Giving meaning to the words of the provision is the Framers’s original intent that “the defendant must have a meaningful opportunity, at least as advantageous as that possessed by the prosecution, to establish the essential elements of his case.” (Westen, The Compulsory Process Clause (1974) 73 Mich.L.Rev. 71, 95.) In Washington v. Texas (1967) 388 U.S. 14 [18 L.Ed.2d 1019, 87 S.Ct. 1920], the United States Supreme Court clearly recognized the importance of the compulsory-process right. “The right to offer the testimony of witnesses, and to compel their attendance, if necessary, is in plain terms the right to present a defense, the right to present the defendant’s version of the facts as well as the prosecution’s to the jury so it may decide where the truth lies. Just as an accused has the right to confront the prosecution’s witnesses for the purpose of challenging their testimony, he has the right to present his own witnesses to establish a defense. This right is a fundamental element of due process of law.” (Id. at p. 19 [18 L.Ed.2d at p. 1023]; accord, Webb v. Texas (1972) 409 U.S. 95, 98 [34 L.Ed.2d 330, 1023, 93 S.Ct. 351] (per curiam).) As the high court declared in Chambers v. Mississippi (1973) 410 U.S. 284 [35 L.Ed.2d 297, 93 S.Ct. 1038], “Few rights are more fundamental than that of an accused to present witnesses in his own defense.” (Id. at p. 302 [35 L.Ed.2d at p. 312]; see also Faretta v. California (1975) 422 U.S. 806, 818 [45 L.Ed.2d 562, 572, 95 S.Ct. 2525] [holding that “The rights to notice, confrontation, and compulsory process” are “basic to our adversary system of criminal justice”].) Indeed, as the Washington court held, “the right of an accused to have compulsory process for obtaining witnesses in his favor, guaranteed in federal trials by the Sixth Amendment, is so fundamental and essential to a fair trial that it is incorporated in the Due Process Clause of the Fourteenth Amendment.” (388 U.S. at pp. 17-18 [18 L.Ed.2d at p. 1022].) The right to compulsory process is independently guaranteed by the California Constitution. In the words of article I, section 15, “The defendant in a criminal cause has the right... to compel attendance of witnesses in the defendant’s behalf . . . .” In light of the similar language in which they are couched, the state constitutional right must be deemed to be at least as broad and fundamental as the federal. A defendant’s constitutional right to c