Full opinion text
Opinion BAXTER, J. An amended information charged defendant Richard Christopher Tully with the 1986 murder of Shirley Olsson (Pen. Code, § 187) and assault with intent to commit rape (id., § 1203.065, subd. (b)). The information also alleged a special circumstance that the murder was committed in the commission of a burglary and, as to both counts, that defendant used a dangerous and deadly weapon, to wit; a knife. (§§ 190.2, former subd. (a)(17)(vii), 12022, subd. (b).) Shirley Olsson, a 59-year-old nurse at the Livermore Veterans Administration medical center, was brutally murdered sometime in the night or early morning hours of July 24 to 25, 1986. A coworker went to her residence and discovered Olsson’s nude body in her bed; she had been stabbed 23 times. A bloody knife and Olsson’s purse were found on the golf course that abutted her house. The screen to her bathroom window was found in a neighbor’s backyard. The blood on the knife was the victim’s. Several months later, a fingerprint and palm print on the knife were matched to defendant. Defendant, who had lived two houses down from Olsson’s residence, admitted to police he had been at the victim’s house the night she was murdered and had had sex with her, but claimed the murder was committed by another man. A jury convicted defendant as charged and found true the special circumstance and weapon allegations. It then returned a verdict of death, which the trial court declined to modify. This appeal is automatic. We affirm the judgment. I. Facts A. Guilt Phase 1. Prosecution evidence a. Shirley (Sandy) Olsson’s murder and the ensuing investigation . In July 1986, Sandy Olsson worked as a registered nurse at the Veterans Administration medical center in Livermore. Her specialty was ostomy— caring for people who had colostomies—and she also worked as a charge or supervising nurse. Typically, she worked Monday through Friday, arriving sometime between 7:00 and 7:30 a.m. and leaving at 4:00 p.m. Olsson was 59 years old and divorced with two adult children, a daughter, Sandra Walters, and a son, Elbert “Tripp” Walters III. For much of the year she lived alone at 1556 Hollyhock Street, except from October through March when her father, Clifford Sandberg, came from Kansas and stayed with her. Olsson’s residence backed up against the Springtown Golf Course. The portrait of Olsson that emerged from the testimony of various witnesses was of a person of fairly set habits. When she arrived home from work, she locked the front door with a chain lock. After changing her top, she poured herself a glass of Coca-Cola and added a little bourbon to it. When her father visited, he and Olsson ate dinner together and watched television. She usually rejected his suggestions that they do something in the evenings because she was tired from work. Instead, she went into her bedroom with her drink to read her mail, magazines, and the newspaper. Olsson’s daughter testified that Olsson went to bed sometime between 9:00 and 10:00 p.m. She first went through her house and made sure all the windows and doors were locked. Olsson was a modest woman who slept in a pair of men’s flannel pajamas. Olsson’s father testified that during his annual visits to his daughter, she never had any male visitors. Her social life apparently consisted of occasionally going out to dinner with work friends. On Thursday, July 24, 1986, Olsson arrived for work at the Veterans Administration medical center at 7:00 a.m. and left at around 4:00 p.m. She walked to her car with another nurse, Deborah Gifford. Gifford testified that Olsson was in a good mood because she was flying to Topeka that weekend for a family celebration of her father’s 85th birthday. Olsson’s across-the-street neighbor, Elden Freeman, saw her arrive home sometime between 4:15 and 4:45 p.m. From his living room, Freeman saw Olsson leave her den at about 8:00 p.m. and then turn off the light in the room at about 10:00 p.m. At that point, there were no other lights on at her house that he could see. At about 4:00 a.m., Linda Rocke, who lived in a house on the opposite side of the golf course from Olsson, was awakened by her dog’s barking. She took the dog outside to keep it from waking the rest of her family. In her backyard, Rocke found what looked like a small bathroom screen. It had not been in her backyard earlier. Olsson failed to appear at work the next morning, July 25. This was unusual because Olsson was described as “very reliable” by her colleague Maxine Gatten. When Olsson failed to appear by 7:25 a.m., Gatten called her residence but did not get an answer. Later, she again unsuccessfully tried to reach Olsson by phone. She discussed the matter with other nurses; they worried that Olsson might be sick, because she had complained about chest pains. Eventually, Gatten left the matter of Olsson’s absence to another nurse, Barbara Green. Green and Olsson had a close relationship. They shared an office and frequently ate lunch together. Olsson brought her lunch to work in a paper sack that she kept in her purse. Her lunch sometimes included fruit, like grapes. Green was aware that Olsson was flying to Kansas the next day for her father’s birthday. When, at about 8:45 a.m., Gatten told Green that Olsson had not reported for work, Green became “[v]ery concerned.” After she, too, failed to reach Olsson by phone, Green drove to Olsson’s residence. Green found Olsson’s car parked in the driveway and the newspaper in front of her house. She went to the front door, rang the bell, knocked, and called Olsson’s name, but did not receive a response. She looked in through a glass panel at the front of the house; there was no movement inside. Green went around to the back where the house abutted the golf course. The windows and the sliding door were locked. However, she noticed the bathroom window was open. She could not reach it on her own, so she pulled a wooden plant stand beneath it and climbed onto the stand. She was still unable to see through the window. Eventually, Green enlisted the help of Olsson’s neighbor, Freeman. Freeman knew Olsson well enough that she would ask him to water her plants and watch her house when she was on vacation. He had been expecting Olsson to bring him the key to her house so he could take care of it while she was in Kansas. As of Friday morning, the day before she was leaving, she had not done so. Green went to Freeman’s house and, after explaining that she had been trying to reach Olsson, asked to use the phone. Green called 911. When there was no response from the 911 call, she and Freeman returned to Olsson’s house. With Freeman’s help, she managed to get high enough to see through the bathroom window. In the bathroom mirror, she saw Olsson’s reflection. Olsson was lying naked on her stomach across her bed; there was a puddle of blood on the floor beneath her head. Green “knew that [she] had to get in as soon as [she] could because [she] had to stop the bleeding.” Freeman returned to his house and got a ladder. Using the ladder, Green entered the house through the bathroom window. Freeman went around to the front door and waited. Green went to her friend’s side. She saw “slits” on Sandy Olsson’s back, “blood dripping down her face,” and “her left eye was bulging out of her head.” Her bedclothes were crumpled beneath her.- She touched Olsson’s body; it was cold. She left the bedroom to find a phone to call 911. As she left the bedroom, she saw a framed photograph had fallen from the wall to the floor while another photograph, still on the wall, was crooked and broken. She was unable to find the phone and went to the front door. She saw that a chain lock had been broken; two of the screws that attached to a plate on the door were hanging from the chain. She opened the door and let Freeman in. She told him she could not find the phone. Freeman told her the phone was in the shape of a Coca-Cola bottle and where she would find it. Green called 911 and told the operator that Olsson had been murdered. Before long, a police officer arrived. He asked Green if Olsson was dead. Green tried unsuccessfully to get a pulse. She told the officer that Olsson was dead. At some point, Green left the house and went to Freeman’s residence. Sergeant Scott Robertson of the Livermore Police Department was put in charge of the investigation. He arrived at the house at about 9:45 a.m. He conferred with other officers already at the crime scene and then walked though the house. There were some green grapes on the living room carpet. He observed signs of a struggle in the front entryway, where he saw a framed photograph that had apparently fallen to the floor and two photographs on the wall that were slightly askew. Just inside the master bedroom he saw another photograph that had fallen from the wall. He also observed signs of a forced entry into the house in the form of the broken slide chain latch on the front door. In Olsson’s bedroom, he observed blood splatters on the closet door and a smear of blood on a light switch. He examined Olsson’s body and saw wounds he believed were consistent with a forced entry into the house. There were bruises on Olsson’s forehead and lips that seemed to be consistent with the edge of a door. There was a similar bruise on the outside of her left ankle. Beneath her body police found a pair of flannel pajamas and blankets. There was a glass of Coca-Cola and a glass of bourbon on the nightstand next to the bed. A bathrobe and pair of slippers were on the floor. On a desk in the bedroom were folded clothes, evidently put there by Olsson for her trip to Kansas. Robertson found no money in the house but a receipt in the kitchen indicated Olsson had received change of $3.95 from a supermarket purchase the prior evening. Around noon, Judith Williams and Cathie Garton were finishing a round of golf at the Springtown Golf Course. They saw a purse floating in a pond on the course. They fished the purse out of the pond and took it into the clubhouse. The purse contained Olsson’s hospital identification card, driver’s license, credit cards and checkbook, among other items, as well as some loose grapes. It had no cash in it. Later that afternoon, police searched the golf course for the murder weapon, assisted by security officers from the Lawrence Livermore Laboratory. At about 3:00 p.m., one of those officers, Renorise Conn, discovered a bloody knife beneath a tree in knee-high brush. That evening, police retrieved the window screen that Linda Rocke had discovered in her backyard the previous night. Police determined that the screen belonged to Olsson’s master bathroom window. Pathologist Sharon Van Meter autopsied Sandy Olsson’s body. Dr. Van Meter counted 23 stab wounds. The wounds were consistent with the knife recovered from the golf course, a Buck 110 knife. Apart from the stab wounds, Van Meter found hemorrhaging of Olsson’s neck and larynx muscles consistent with strangulation. Van Meter also observed injuries to Olsson’s lip and head consistent with her head having come into contact with the edge of a door being forced open. While Van Meter found no trauma to Olsson’s vaginal area, she testified that the absence of such trauma did not mean Olsson had not been forced to submit to sexual intercourse before her death. Van Meter testified that the cause of death was shock and hemorrhaging, as the result of multiple stab wounds, associated with asphyxia due to fractures of the larynx. Olsson may have survived for more than an hour after the wounds were inflicted. The blood on the knife was consistent with Olsson’s blood. The sheets on her bed had bloodstains that indicated they had been used to wipe off the bloody knife. Forensic examination of Olsson’s body, clothes, and bedding failed to reveal the presence of semen or spermatozoa. The criminalist who conducted the examination testified that her findings did not rule out the possibility of sexual intercourse if the assailant had not ejaculated. Two identifiable prints were recovered from the knife handle. Between July 25, 1986, and March 1, 1987, the Livermore Police Department submitted the names of 40 or 50 possible suspects to the California Department of Justice for fingerprint comparison purposes. Among the prints submitted were defendant’s. However, the fingerprint analysts were unable at that time to match the prints on the knife or any prints taken from the crime scene to a suspect. b. Defendant is connected to the murder In July 1986, John Chandler lived on Hollyhock Street, two houses from Olsson’s residence. Chandler was the boyfriend of defendant’s mother and had known defendant since defendant was 15 years old. Defendant had lived with Chandler, moving out only three weeks before Olsson was murdered. Defendant kept a key and sometimes stayed at Chandler’s house. He also received mail and phone messages there. Chandler told the district attorney and a district attorney investigator that he was with defendant when defendant purchased a Buck 110 knife in September 1985. On March 17, 1987, Sergeant Robertson had a conversation with Officer Scott Trudeau, also a member of the Livermore Police Department. Based on that conversation, Robertson resubmitted defendant’s prints for analysis. A fingerprint and a palm print on the murder weapon were matched to defendant’s right ring finger and right palm. On March 27, Robertson arrested defendant. That same day, defendant was interrogated by Robertson and Detective Mike Newton, also of the Livermore Police Department. Defendant acknowledged that his mailing address was John Chandler’s residence and admitted to having lived there. He claimed, however, that he had never met Sandy Olsson and had never been in her house. When Robertson told him that his fingerprints had been found on the knife that killed Olsson, defendant denied any involvement. He said his knife had been stolen from his car in the spring of 1986. Defendant, who said he read about the murder in the newspapers, suggested it was a “domestic type of killing.” Robertson also told defendant’s wife, Vicky Tully, that defendant’s fingerprints had been identified on the murder weapon. Robertson and Newton met with Vicky Tully the following Monday, March 30, 1987. Afterwards, the officers talked to defendant again. At the second interview, defendant told the following story: At some point in the early morning hours of July 25, 1986, he met up with a man he knew only as “Doubting Thomas,” who was a member of the Hells Angels. Defendant had already consumed four or five 12-ounce beers and four or five 4-ounce “kamikazes” at a bar in Pleasanton. Thomas told defendant he wanted to go to the house of a woman who lived on Hollyhock Street in Livermore, from whom he bought drugs that she obtained from the hospital. When defendant told Thomas he rented a room from John Chandler on the same street, Thomas said “that worked out good” and told defendant to park at Chandler’s because it was “only a couple of houses down” from their destination. The two men walked to the woman’s residence. Thomas entered first and then signaled for defendant to enter. While Thomas and the woman talked in her bedroom, defendant waited in the living room where he found a bottle of whiskey and “took a few pulls off” of it. He heard Thomas and the woman start to argue. After they calmed down, Thomas motioned for defendant to come into the bedroom and asked him if he “wanted to have a little fun” with the woman. Defendant entered the bedroom and found the woman naked on her bed. He had intercourse with the woman but was too drunk to maintain an erection and did not ejaculate. He was in the bedroom for under 10 minutes and left feeling “kinda stupid.” Defendant went back out into the living room while Thomas rejoined the woman in the bedroom. He heard Thomas and the woman arguing again; “[i]t sounded like they were wrassling or he was knocking her around or something.” Defendant went to the hallway to listen in and the woman came charging naked out of the bedroom and ran into him. Thomas came out and pulled the woman back into the room by her throat and hair. Defendant returned to the living room. Within a matter of minutes, it got quiet and Thomas came out of the bedroom. Defendant went into the bedroom and saw the woman lying naked on the bed with multiple stab wounds on her back. He said he “was freaking out” and asked Thomas if he had killed her. Thomas said yes, but did not say why. Observing that Thomas had been wearing leather gloves the entire time, defendant went to his car to get his gloves. When he returned he saw Thomas in the living room rummaging through a purse. Defendant attempted to wipe his fingerprints off any object he had touched. He and Thomas left through the patio door. Thomas handed defendant the knife defendant had had in his car. Defendant became angry that Thomas had used his knife to kill the woman. Thomas wanted to return to Chandler’s house, but defendant told him, “we can’t go back over there, you know, looking like we do.” They walked toward the pond on the golf course. Defendant tossed the knife while Thomas, after taking what he wanted from the purse, threw it into the pond. Defendant gave some of his clothes to Thomas while he went to get his car. When he returned for Thomas, his clothes were gone and Thomas told him, “I stashed ’em so they won’t be found.” Defendant sought to be placed in a witness protection program because he was afraid of Doubting Thomas. He denied having stabbed the victim. Later that day, defendant spoke to a deputy district attorney and an investigator. Defendant again expressed interest in the witness protection program. The district attorney declined to make any promises, rebuffed defendant’s request for a plea bargain, and reminded him that what he said could and would be used against him. Defendant then essentially repeated the story he had told the police. Defendant told the district attorney that other women had offered themselves to him for sex before, explaining, “Sometimes it was party situations, sometimes it was just, um, what they call a pass-around chick.” A review of medications handled by Olsson revealed no shortages of any controlled substance. Police identified “Doubting Thomas” as Thomas Pillard. His fingerprints were obtained and submitted to the California Department of Justice along with defendant’s. 2. Defense evidence The defense called Sergeant Scott Robertson, who identified a pair of men’s shoes recovered from a dumpster near the golf course as well as bedding items taken from the victim’s bedroom. The defense also re-called criminalist Sharon Binkley regarding her examination of hair evidence taken from Olsson’s bedroom. Binkley testified that all the hairs retrieved from the crime scene were consistent with Olsson’s hair and inconsistent with defendant’s hair, except for some reddish-brown hairs on a pillowcase (which evidently belonged to Olsson’s daughter’s dog) and two unidentified human hairs on a knitted blanket. The defense’s only other witness was Charles Fraser, the deputy district attorney who had interviewed defendant on March 30, 1987. He testified to his experience as a trial lawyer, particularly to the number of cross-examinations he had conducted prior to his interview with defendant. B. Penalty Phase 1. Prosecution evidence The prosecution presented evidence that defendant had been involved in two physical altercations while in jail. On January 7, 1988, defendant engaged in a fistfight with another inmate during mealtime. Defendant received a split lower lip that required a stitch, while the other inmate suffered no visible injuries. On September 26, 1991, Alameda County Deputy Sheriff Michael Perkins saw defendant and another inmate in a “wrestling hold” with each other. They had to be forcibly separated. Defendant had some bumps and bruises on his face. The other inmate was treated for an eye injury. The prosecution also presented victim impact evidence in the form of testimony from Sandy Olsson’s adult children, Sandra Walters and Elbert “Tripp” Walters III; her sister, Jan Dietrich; and Olsson’s then 91-year-old father, Clifford Sandberg. Sandra Walters, 35 years old at the time of trial, testified that her mother was her “best friend,” and “meant everything to me.” She stayed with her mother once a month and called her every week. Her mother’s death had left her feeling “lost” and “afraid.” She “didn’t know who was going to take care of me if my mom wasn’t around.” Her first thought about her mother “is the horror of how she died,” and she could not see a knife without remembering the manner of her mother’s death. She testified that she slept “with a night light” and a “hatchet underneath my bed.” She knew her mother had had breast cancer “but if she would have died by cancer, [Walters] could have at least said good bye to her.” She remained angry because her mother had been taken from her and it had become hard for her to be close to anyone. Tripp Walters testified that his mother was his “anchor,” who had “unconditional love” for him even when he was “a little bit wild” as a teenager and into his 20’s. He described his mother as “happy” and “caring.” Her death “turned [his] whole world upside down,” was “devastating,” and left him “very depressed.” Since his mother’s murder, he had married and he and his wife were planning to have a child. He would have understood if his mother had died from cancer but he could not understand that she was murdered. Jan Dietrich, who lived in Washington, D.C., at the time of the trial, was Sandy Olsson’s younger sister. They were each other’s only sibling, and were close friends. They had travelled together in Europe and the United States. Dietrich testified that Olsson had planned to retire in three years and they had talked about Olsson’s plans to travel. Dietrich had to tell her father about Olsson’s death, and flew to Topeka, Kansas, so that she and her father could fly to California together. She and her father were at the airport at Topeka preparing to fly to California at about the same time Olsson’s plane would have been arriving in Topeka for her father’s birthday celebration. Dietrich felt no closure because of the manner of her sister’s death. Clifford Sandberg testified he and his daughter had planned to buy a car together after she retired and to use it to travel. At 91, he had experienced the death of many people, but the manner of his daughter’s death still caused him difficulty. 2. Defense evidence Derek Mendoca, the inmate with whom defendant was fighting on January 7, 1988, testified that he threw the first punch because defendant had wiped mustard or ketchup on Mendoca’s shirt. He and defendant were friends before the fight and were friends afterwards. Defendant’s older siblings, Shirley Brown and Roger Tully, also testified. Brown testified that defendant was bom in Turkey, one of five children their mother had by three different men. Defendant’s father, Richard Ross Tully (Richard Ross), was Brown’s stepfather; their mother’s name was Louise. Richard Ross was in the Air Force and the family moved often. Richard Ross also received assignments that took him away from home for long periods of time. Once, when he was gone for six months, Louise began living with another man. Richard Ross had a drinking problem, and he and Louise “were always fighting.” Louise was the physical aggressor. She was very demanding of the children, “wors[e] than a drill sergeant.” Brown was ashamed of her stepfather’s constant drinking because she “didn’t know what he was going to do.” If he was at home “he was drinking.” Richard Ross’s drinking affected his career—he lost rank and was forced to enter a rehabilitation clinic. Once, when Brown was age 11, her stepfather came into her room, asked her if she wanted to learn how boys kissed, and tried to lay her down on her bed. She told her mother about the incident but Louise did nothing. Defendant was a bed wetter. He was also the object of his mother’s rage and she would call him stupid. Brown left home as soon as she graduated from high school, but continued to have emotional and psychological problems, for which she was hospitalized. She had visited defendant in jail and corresponded with him and she wanted to continue to do that. Roger Tully, defendant’s older brother, was adopted by Richard Ross but was not his natural son. At the time of defendant’s trial, Roger was a burglary detective in the Baton Rouge Police Department, where he had also served as a homicide detective. During defendant’s childhood, neither Richard Ross nor Louise was often at home, and responsibility for taking care of him fell to Roger and Shirley. Richard Ross was drunk most of the time he was at home, if he came home at all. Sometimes he drank to the point of hallucinating. Once, on a camping trip, he got so drunk he thought he was in a sinking boat in the lake where they were camped. He began screaming, “Get out, get out, get out. We’re going down, we’re going down.” Roger tried to tell him they were not in the lake, but parked next to it. Richard Ross would also be brought home by the military police with black eyes and other injuries. Both he and Louise had affairs. Once Roger discovered his mother naked with another man. He also found incest pornography in his parents’ bedroom. Richard Ross and Louise fought over his drinking. Often she would rouse the children from sleep and they would be “hauled off to a friend’s house or a neighbor’s house.” The fights were sometimes physical. One night Roger came home and found broken glass everywhere. Later, he saw Richard Ross on the kitchen floor with a skillet over his head; he had apparently been knocked cold. Richard Ross would leave, and then Louise channeled her anger at her children. Discipline was inconsistent and her rules were arbitrary. Louise hit her children with her hands and a belt. Defendant was a particular target of his mother’s anger. Louise was “volatile” and had no close friends. Roger had had to intervene when his mother attempted suicide; it was the last time he saw her. Roger reacted to the family’s dysfunction by “act[ing] out.” He experimented with drugs and ran away from home. When Roger was age 17, he became involved in a church. His mother threw him out of the house and he went to live with a family he had met through the church. For the first time, he experienced “what a normal life is.” He tried to share his religious experience with defendant, but Louise would not allow defendant to go to church with Roger. Roger said about defendant’s actions, “The only thing between me being up here and him being there, was the fact that I had a religious conversion when I was 18 .... He’s got to take his responsibility for his [actions], but as far as how it all came out ... it’s the most normal, natural result. I don’t blame him.” Defendant’s 18-year-old niece, Ursula—Shirley Brown’s daughter— testified that she had begun to correspond with defendant while he was in jail on the present charges and she had come to feel comfortable confiding in him. She hoped to continue their relationship. Defendant’s son, Richard Anthony Tully, known as Tony, testified that he often spoke to his father on the phone and received letters from him. He wanted his father to live. II. Discussion A. Suppression motions 1. Motion to suppress asserting unlawful detention on March 7, 1987 Sandy Olsson was murdered on July 24 or 25, 1986; by March 1987, the police investigation had failed to yield a suspect. On March 7, 1987, however, defendant was detained for driving on a suspended license. This led to his arrest on drug charges and ultimately to his arrest for Olsson’s murder. Prior to trial, defendant brought two motions to suppress the fingerprint evidence that linked him to the murder weapon and also statements he made to police during interrogations on March 27 and March 30, 1987. The first suppression motion asserted this evidence was the poisonous fruit of his illegal detention on March 7, 1987. (See Wong Sun v. United States (1963) 371 U.S. 471, 484 [9 L.Ed.2d 441, 83 S.Ct. 407].) a. Evidence adduced at hearing On March 7, 1987, Officer Scott Trudeau of the Livermore Police Department was conducting surveillance of the residence of Kenneth Perry, a known narcotics offender. Trudeau was alone in his unmarked patrol car. Two other officers, Timothy Painter and Jeff Shweib, were nearby. At about 8:00 p.m., Trudeau saw a Fiat Brava drive past him with two occupants. He recognized the passenger as Ed Snyder. He also recognized the driver— defendant—because he had stopped him two or three months earlier, but did not recall his name. The Fiat passed Trudeau twice before parking near Perry’s residence. Trudeau described the occupants to Painter. Painter identified the driver as defendant. Painter had taken a vandalism report a week earlier allegedly involving defendant. Painter told Trudeau defendant was driving on a suspended driver’s license and that there was an arrest warrant out for Snyder. Defendant got out of the car and went into the building where Perry lived, emerged 20 to 25 minutes later, and drove away. Trudeau followed and stopped him. Trudeau stopped defendant because of the license violation and Snyder’s arrest warrant. He approached defendant and asked him for his driver’s license and his registration. Defendant gave Trudeau his license but could not find his registration. While Trudeau was talking to defendant about his license and registration, Painter and Shweib were at the passenger side of the car talking to Snyder. Painter took Snyder to his own car where Shweib remained with him. Trudeau returned to his vehicle to write out the citation. He completed most of the citation in his car, but defendant still had to sign it and there were some boxes on the citation which required further discussion with defendant. While Trudeau was in his patrol car, Painter approached defendant, who was now standing outside his car. Because of the vandalism incident, Painter knew defendant was a narcotics user who was normally armed and liked to use a knife. Painter had been told by the victims that they and defendant had been involved in a drug deal “gone sour” and defendant had retaliated against them by damaging their car with a knife. At that point, however, the vandalism incident was closed. Defendant had not even been listed as a suspect because there was no definite evidence of his involvement. Even if he had admitted vandalizing the car, Painter would not have arrested him because it was a misdemeanor that had not been committed in his presence. He could only have written up a report and asked for a complaint. Painter’s purpose in talking to defendant was to obtain information that either confirmed or discredited what he had been told about defendant’s involvement in the vandalism. Painter told defendant “what had been said about him being a narcotics user and being armed” with a knife. He asked defendant if he could search him. Defendant said, “Sure, I don’t have anything on me.” Painter searched defendant by using a flashlight. He held the flashlight and peered in defendant’s clothing and around him but did not want to “squeeze things too much” because he was afraid of being stuck by a needle. Painter found a bindle in the coin pocket of defendant’s left pants pocket. The bindle contained white powder that Painter believed was methamphetamine. He turned it over to Trudeau. As Trudeau returned to defendant’s car to complete the citation, he heard Painter ask defendant for consent to search and defendant reply “[something to the effect, you know, go ahead and knock yourself out, something like that.” Trudeau heard Painter say he was concerned that defendant carried weapons but could not recall “[w]ord for word” what Painter said when he asked defendant if he could search him. After Painter gave Trudeau the bindle, Trudeau asked defendant for permission to search his car. Defendant said, “[S]ure, go ahead.” Trudeau found three hypodermic syringes and a bent, burnt spoon. Defendant was then arrested for possession of methamphetamine, possession of hypodermic syringes and driving on a suspended license. He was transported to the police station where a booking search revealed seven or eight bindles of methamphetamine secreted in his underwear. Trudeau read defendant his Miranda rights (Miranda v. Arizona (1966) 384 U.S. 436 [16 L.Ed.2d 694, 86 S.Ct. 1602]), which defendant waived. However, when Trudeau told defendant he “was going to ask [defendant] questions pertaining to the items that were found on him, [defendant] told [Trudeau] he didn’t want to talk to [him].” Trudeau stopped questioning defendant. Defendant then “initiated [a] conversation about how he did not want to go to jail on that particular evening.” Trudeau told him there were “ways for that not to occur,” specifically that they could reach an agreement for defendant to “work off his offense,” by becoming an informant. Defendant was interested and Trudeau went out to call a narcotics detective, Detective Jensen. While he and defendant were waiting for Jensen to arrive, they talked. Trudeau learned that defendant had been in the Marine Corps, was injecting himself with methamphetamine four or five times a day, and supported his habit by breaking into cars and houses and selling items he took from them. He also told Trudeau that he was being treated for stomach problems at a Veterans Administration hospital. Trudeau told defendant that what he had revealed about his drug habit and the way he supported it would not be used against him, and it did not appear in the police report. After Jensen arrived, Trudeau left the room. Jensen came out and said he and defendant had reached a deal. Defendant was released that night. . At this point, Trudeau knew very little about the Olsson investigation, although he had read an FBI profile of it. It “never entered [his] mind” that defendant might be a suspect in that crime. Trudeau was off work for a few days after the interview with defendant. When he returned he discovered he still had defendant’s driver’s license attached to his clipboard. He sought out Detective Jensen, who told him the deal with defendant was off because defendant had failed to keep his end of the bargain. Jensen said he was going to file the drug case. Trudeau said he would return defendant’s license to him. He drove to the residence listed on defendant’s driver’s license—1572 Hollyhock—and realized it was only two houses from where Sandy Olsson had lived. He remembered defendant had told him he was being treated at a Veterans Administration hospital and that Olsson was a nurse at the Veterans Administration medical center. He also remembered that the FBI profile suggested that the suspect lived in the area of the crime scene and was probably a drug user. Trudeau went to the address but found no one home. He returned to the police station and talked to Sergeant Robertson about defendant. As he was leaving, he ran into another officer, John Leal. Leal told Trudeau that defendant was a suspect in an assault with a deadly weapon case. Trudeau conveyed this new information to Robertson. He suggested Robertson run defendant’s fingerprints against the prints found on the murder weapon. Sergeant Robertson and his men had canvassed between 150 and 200 houses around the crime scene. Defendant’s name had not come up from this canvass. Between July 1986 and March 1987, Robertson had looked at around 30 potential suspects. He had sent fingerprint cards of potential suspects to the California Department of Justice in Sacramento to compare to the prints found on the murder weapon but there had been no matches. Defendant’s fingerprints had been among those sent to Sacramento. As of March 17, 1987, when Trudeau approached him, Robertson had a new supervisor, Sergeant Jack Stewart, who had been assigned to the case in January 1987. He told Robertson he wanted to recanvass the entire neighborhood to determine who owned each house, and who had been living in the houses, whether as renters or visitors, at the time of the murder. A plot map of the houses surrounding the murder scene indicated that 1572 Hollyhock, where defendant had lived, had been doublechecked during the first canvass to verify that someone at the residence had been interviewed. Both Robertson and Stewart testified that the new canvass would have resulted in a triple check of that address. Stewart also testified that he planned to run a computerized address check to identify all residents at houses around the scene of the crime. He was also going to see if it was possible to run a computer check through the Department of Motor Vehicles to determine whose driver’s licenses listed those houses as their residences. Based on the information about defendant provided to Robertson by Officer Trudeau on March 17, 1987, Robertson took defendant’s fingerprint card, from a 1973 juvenile offense, and hand delivered it to the Department of Justice in Sacramento. Angelo Rienti, a latent fingerprint analyst, told Robertson that defendant’s fingerprint matched the print on the murder weapon. Defendant’s palm print, taken after his arrest, was later matched to a partial palm print on the murder weapon. Defendant was arrested on March 27, 1987, at the home of his wife’s parents. Police went there with arrest warrants on drug charges. Sergeant Stewart and Detective Tart went to the front door of the residence while Sergeant Robertson and Detective Newton were deployed to the rear. Diane Holbert, Vicky Tully’s mother, answered the front door. She told police defendant was not there, but let the police into her house to talk to her. Once inside, Stewart asked Holbert if she knew where Vicky was. Holbert said no. However, as they were talking Stewart saw a woman in the hallway who he thought was Vicky Tully leaving one room and about to enter another. He asked her if she was Vicky Tully. She said yes and asked why he wanted to know. Stewart told her he was looking for defendant. Vicky looked at the door she was walking toward and told police defendant was asleep inside the room. She said she would get him because he did not have clothes on. As she opened the door, Stewart went swiftly down the hall and told her the police would get him. At that point, the door was opened about a foot. Stewart saw a man lying on his stomach with his head on a pillow. Stewart entered the room, yelled at him to wake him and asked him if he was Richard Tully. Stewart identified himself as a police officer. Defendant woke slowly and identified himself as Richard Tully. Stewart told him the police had warrants for his arrest. Defendant was arrested, handcuffed and taken to jail wearing only a pair of blue jeans. b. Trial court ruling Defendant’s initial motion, filed on February 2, 1992, asserted that all evidence arising from defendant’s initial detention on March 7, 1987, and from his subsequent arrest on March 27, 1987, should be suppressed as a product of an illegal search and seizure. Following the hearing on the motion, defendant was allowed to file a supplementary motion specifying the grounds for suppression. These included (1) any consent by defendant to a search of his person in the course of the March 7 vehicle stop was invalid as the product of an unlawful interrogation because he was not given a Miranda warning; (2) even if valid, the search of defendant’s person exceeded the scope of his consent; (3) statements he made after his arrest on March 7 on drug charges regarding his drug use and criminal activity were involuntary; and (4) entry into the bedroom where he was arrested violated section 844’s knock-notice requirement. The prosecution argued the stop was lawful but, even if it was illegal, the fingerprint comparison evidence.connecting defendant to Olsson’s murder was not tainted by such illegality. The prosecution also argued that the fingerprint comparison evidence would have inevitably been discovered in light of the new investigative measures that Sergeant Stewart intended to undertake. The trial court concluded that the search of defendant’s person did not exceed the scope of his consent. It found further, however, that the statements he made following his March 7 arrest about his drug use, his criminal activity to support his drug use—breaking into homes and cars—and that he was being treated at a Veterans Administration hospital were involuntary and must be suppressed because he had been told these statements would not be used against him. Nonetheless, the court declined to suppress the fingerprint comparison evidence because it “was not tainted by the illegally obtained statements and is admissible.” Specifically, “[a]t the time the involuntary statements were obtained, the officer had no reason to suspect or believe the conversation would turn up evidence of any crime other than the narcotics offenses. In the court’s view, this was a case of investigatory serendipity.” The court also found “the police would inevitably have again compared defendant’s prints with those found on the knife found at the murder scene.” On this point, the court found “credible” the prosecution’s evidence that in the “normal course of the continuing murder investigation, [defendant] would have emerged as a prime suspect quite apart from the statements he gave to Officer Trudeau.” c. Discussion “In reviewing a suppression ruling, ‘we defer to the superior court’s express and implied factual findings if they are supported by substantial evidence, [but] we exercise our independent judgment in determining the legality of a search on the facts so found.’ ” (People v. Lomax (2010) 49 Cal.4th 530, 563 [112 Cal.Rptr.3d 96, 234 P.3d 377].) Thus, while we ultimately exercise our independent judgment to determine the constitutional propriety of a search or seizure, we do so within the context of historical facts determined by the trial court. “As the finder of fact... the superior court is vested with the power to judge the credibility of the witnesses, resolve any conflicts in the testimony, weigh the evidence and draw factual inferences in deciding whether a search is constitutionally unreasonable.” (People v. Woods (1999) 21 Cal.4th 668, 673 [88 Cal.Rptr.2d 88, 981 P.2d 1019].) We review its factuál findings “ ‘ “under the deferential substantial-evidence standard.” ’ ” (People v. Ayala (2000) 23 Cal.4th 225, 255 [96 Cal.Rptr.2d 682, 1 P.3d 3].) Accordingly, “[w]e view the evidence in a light most favorable to the order denying the motion to suppress” (People v. Manderscheid (2002) 99 Cal.App.4th 355, 357 [121 Cal.Rptr.2d 251]), and “[a]ny conflicts in the evidence are resolved in favor of the superior court ruling” (People v. Limón (1993) 17 Cal.App.4th 524, 529 [21 Cal.Rptr.2d 397]). Moreover, the reviewing court “must accept the trial court’s resolution of disputed facts and its assessment of credibility.” (People v. Valenzuela (1994) 28 Cal.App.4th 817, 823 [33 Cal.Rptr.2d 802].) Because the Attorney General asserts that many of defendant’s arguments on appeal are forfeited by his failure to have advanced them in the trial court, we must also briefly examine the question of when an argument not made to the trial court is, nonetheless, cognizable on appeal. Constitutional claims raised for the first time on appeal are not subject to forfeiture only when “the new arguments do not invoke facts or legal standards different from those the trial court itself was asked to apply, but merely assert that the trial court’s act or omission, insofar as wrong for the reasons actually presented to that court, had the additional legal consequence of violating the Constitution.” (People v. Boyer (2006) 38 Cal.4th 412, 441, fn. 17 [42 Cal.Rptr.3d 677, 133 P.3d 581], italics omitted; see People v. Yeoman (2003) 31 Cal.4th 93, 117 [2 Cal.Rptr.3d 186, 72 P.3d 1166].) However, “[a] party cannot argue the court erred in failing to conduct an analysis it was not asked to conduct.” (People v. Partida (2005) 37 Cal.4th 428, 435 [35 Cal.Rptr.3d 644, 122 P.3d 765].) Defendant contends he was unlawfully detained because the duration of the traffic stop was excessive in relation to its purpose. Additionally, he claims that Officer Painter’s questions about defendant’s involvement in the vandalism incident were unjustified by the purpose of the stop and lacked a separate “reasonable suspicion” of criminal activity. He concludes that because the detention was excessive and the questioning unjustified, his consent was involuntary. Additionally, he asserts his consent to search his person was involuntary because he was not given Miranda advisements before consent was sought. Only the Miranda claim was argued below; the others are forfeited. The questions raised by these arguments—whether the duration of the stop was excessive and whether Painter’s questions were proper—involve analyses the trial court was not asked to conduct and potentially required factual bases additional to those adduced at the hearing. The claims are also without merit. “ ‘As a general matter, the decision to stop an automobile is reasonable where the police have probable cause to believe that a traffic violation has occurred.’ (Whren v. United States (1996) 517 U.S. 806, 810 [116 S.Ct. 1769, 135 L.Ed.2d 89].) If there is a legitimate reason for the stop, the subjective motivation of the officers is irrelevant.” (People v. Lomax, supra, 49 Cal.4th at p. 564, fn. omitted; see People v. Torres (2010) 188 Cal.App.4th 775, 785-786 [116 Cal.Rptr.3d 48].) “[T]he law contemplates that the officer may temporarily detain the offender at the scene for the period of time necessary to discharge the duties that he incurs by virtue of the traffic stop.” (People v. McGaughran (1979) 25 Cal.3d 577, 584 [159 Cal.Rptr. 191, 601 P.2d 207] (McGaughran); see People v. Brown (1998) 62 Cal.App.4th 493, 496-497 [72 Cal.Rptr.2d 793].) Those duties may “necessarily include the time required by the officer to write out the citation and obtain the offender’s promise to appear .... [U]pon demand of a police officer every motorist must present for ‘examination’ both his driver’s license [citation] and the registration card of the vehicle [citation]. . . . And although not specifically compelled by law, certain other steps customarily taken as matters of good police practice are no less intimately related to the citation process; for example, the officer will usually discuss the violation with the motorist and listen to any explanation the latter may wish to offer; and if the vehicles of either are exposed to danger, the officer may require the driver to proceed to a safer location before the investigation continues. [Citations.] [][] Each of the foregoing steps, of course, requires a certain amount of time to accomplish.” (McGaughran, supra, at p. 584, fn. omitted.) Defendant argues that “once [the citation] process was completed, there was no cause to detain him for questioning, and any consent to search, which was obtained from [defendant] during the illegal questioning was tainted.” This claim assumes that the citation process was completed when Officer Painter questioned defendant about the vandalism incident and asked to search him. Not so. After Trudeau asked defendant for his license and registration, and discussed them with him—while Painter and Shweib were removing Snyder from defendant’s car—Trudeau testified he went back to his car to write the citation, but still had to obtain defendant’s signature and discuss with defendant some boxes on the citation form. While Trudeau was in his car working on the citation, Painter approached defendant, spoke to him about the vandalism incident and asked for his consent to search. Thus, defendant was not detained after the completion of the citation process to allow Painter to question him. As the factual predicate of his argument falls, the argument itself—that the detention was excessive in relation to the time required by Trudeau to complete the citation process—also collapses. Moreover, Painter was permitted to ask defendant about matters unrelated to the traffic stop so long as the questioning did not prolong the stop beyond the time required to cite defendant. (See McGaughran, supra, 25 Cal.3d at p. 584 [“[i]f a warrant check can be completed” within the period of time necessary for the completion of the citation process, “no reason appears to hold it improper: because it would not add to the delay already lawfully experienced by the offender as a result of his violation, it would not represent any further intrusion on his rights”]; see People v. Bell (1996) 43 Cal.App.4th 754, 767 [51 Cal.Rptr.2d 115] [“investigative activities beyond the original purpose of a traffic stop are permissible as long as they do not prolong the stop beyond the time it would otherwise take”].) In People v. Brown, supra, 62 Cal.App.4th 493, the defendant was lawfully detained for riding a bicycle without a light or reflectors. While running a warrant check, the detaining officer asked the defendant about his probation status and, evidently, the contents of his fanny pack. A consent search of the pack yielded methamphetamine. On appeal, the defendant argued that it was improper for the officer to have questioned him about matters unrelated to the vehicle stop. The reviewing court rejected the claim: “Questioning during the routine traffic stop on a subject unrelated to the purpose of the stop is not itself a Fourth Amendment violation. Mere questioning is neither a search nor a seizure.” (Id. at p. 499; see U.S. v. Shabazz (5th Cir. 1993) 993 F.2d 431, 435-437 [where car stopped for speeding, police could question defendant about his travels and ask consent to search his car as long as they were - waiting for results of computer check on his driver’s license].) In People v. Bell, supra, 43 Cal.App.4th 754, where a similar claim was raised, the court observed: “Defendant argues that . . . police cannot ask questions unrelated to the purpose of the traffic stop, regardless of whether those questions prolong the stop. The warrant check in McGaughran, [supra, 25 Cal.3d 577] however, was unrelated to the purpose of the traffic stop; nevertheless, the court held that a warrant check would be permissible as long as it did not prolong the stop.” (Id. at p. 767.) Nor must questioning on an unrelated matter, which does not unduly prolong the traffic stop, be justified by reasonable suspicion of wrongdoing. (People v. Gallardo (2005) 130 Cal.App.4th 234, 238 [29 Cal.Rptr.3d 455] [where, during traffic stop, police asked defendant whether he had anything illegal in his car, obtained his consent to search and found drugs, an articulable suspicion of wrongdoing preceding search request was not required “as long as the detention [was] not unreasonably prolonged as a result of the request to search”].) Accordingly, we reject defendant’s claims that the traffic stop detention was unduly prolonged, that Painter’s questions about the vandalism incident were improper because they were unrelated to the traffic stop, or that a separate reasonable suspicion of wrongdoing was required before Painter could inquire or seek consent to search, or that defendant’s consent was obtained in the course of an illegal detention. Defendant claims that his consent to search his person was improper because Painter did not give him his Miranda rights before questioning him about the vandalism incident. In Berkemer v. McCarty (1984) 468 U.S. 420 [82 L.Ed.2d 317, 104 S.Ct. 3138] (Berkemer), the Supreme Court held that a routine traffic stop, although a detention, is not tantamount to a formal arrest, and, therefore, questions asked during such detentions do not constitute a custodial interrogation requiring Miranda warnings. (Berkemer, at pp. 435-440.) The court characterized routine traffic stops as similar to Terry stops (Terry v. Ohio (1968) 392 U.S. 1 [20 L.Ed.2d 889, 88 S.Ct. 1868]), which permit police to briefly question individuals about whom the police entertain a reasonable suspicion of criminal activity that falls short of probable cause. “[T]his means that the officer may ask the detainee a moderate number of questions to determine his identity and to try to obtain information confirming or dispelling the officer’s suspicions. But the detainee is not obliged to respond. And, unless the detainee’s answers provide the officer with probable cause to arrest him, he must then be released. The comparatively nonthreatening character of detentions of this sort explains the absence of any suggestion in our opinions that Terry stops are subject to the dictates of Miranda. The similarly noncoercive aspect of ordinary traffic stops prompts us to hold that persons temporarily detained pursuant to such stops are not ‘in custody’ for the purposes of Miranda.” (Berkemer, at pp. 439-440, fns. omitted.) Here, defendant was lawfully detained for a traffic violation during which Officer Painter asked him questions about the vandalism incident either to confirm or dispel his information that defendant had been involved. While defendant was not free to leave until the citation process was completed, he was under no obligation to answer Painter’s questions. Unless his answers had provided Painter with probable cause to arrest him for vandalism— which, in any case, Painter testified he could not have done—he would have been free to leave once the citation was completed. Accordingly, pursuant to Berkemer, Painter was not required to give defendant Miranda warnings before questioning him and his failure to do so did not invalidate defendant’s consent to search. We reject defendant’s assertions to the contrary. Next, defendant argues that the search of his person exceeded the scope of his consent because he consented only to a search for weapons, not drugs. He claims “Painter exceeded the scope of any consent when he forced his fingers in[to] the coin pocket of [defendant’s] jeans in hopes of finding narcotics, under the pretext of searching for a knife, which could not possibly fit in that pocket.” “The standard for measuring the scope of a suspect’s consent under the Fourth Amendment is that of ‘objective’ reasonableness— what would the typical reasonable person have understood by the exchange between the officer and the suspect?” (Florida v. Jimeno (1991) 500 U.S. 248, 251 [114 L.Ed.2d 297, 111 S.Ct. 1801].) “Whether the search remained within the boundaries of the consent is a question of fact to be determined from the totality of [the] circumstances. [Citation.] Unless clearly erroneous, we uphold the trial court’s determination.” (People v. Crenshaw (1992) 9 Cal.App.4th 1403, 1408 [12 Cal.Rptr.2d 172]; see U.S. v. Sierra-Hernandez (9th Cir. 1978) 581 F.2d 760, 764.) Defendant’s argument focuses on a perceived discrepancy about what Officer Painter said he told defendant. At the suppression hearing, Painter testified that he told defendant he wanted to search him for weapons and narcotics, while at the preliminary hearing Painter testified he searched defendant because he thought he might have a weapon, but made no mention of narcotics. Defendant also cites testimony by Officer Trudeau who, when asked whether he heard Painter say something to defendant about weapons but not drugs, replied, “He said weapons, correct.” Defendant’s focus is too narrow. The question is what a reasonable person would have understood from his or her exchange with the officer about the scope of the search. To answer that question, we look at the totality of the circumstances. Here, Painter testified that he told defendant about his information that defendant used drugs and carried a knife. When he asked defendant if he could search him, defendant said, “Sure, I don’t have anything on me.” When Painter was confronted by his seemingly inconsistent testimony about whether he had asked to search for both a weapon and drugs, he responded, “I recall mentioning the weapon and I recall mentioning the narcotics use. But I—apparently made reference in the transcript of searching for weapons. But I don’t recall exactly narrowing my scope of my search at that point.” As for Trudeau, his response was, at best, ambiguous and, in any event he also testified that he did not remember what Painter said to defendant “[w]ord for word,” in asking his consent to search. Thus, Painter knew defendant was an armed drug user, and communicated his awareness to defendant before he asked to search him. It is therefore reasonable to conclude—as evidently the trial court did—that defendant understood Painter was asking to search for both drugs and weapons. It appears, moreover, that the trial court found Painter to be a credible witness. We do not second-guess the trial court’s credibility findings nor, on the record before us, can we conclude its implied determination that defendant understood the search to be for both drugs and weapons was clearly erroneous. For this reason, we reject defendant’s further claim that the consent search of his car, his arrest, and the search of his person at the police station were tainted by the illegality of the initial search. Defendant asserts that his statements to Trudeau that were suppressed by the trial court because they were induced by Trudeau’s promise not to use them against defendant—a promise broken when he repeated them to Sergeant Robertson—should also have been suppressed because they were taken in violation of Miranda. From this premise, he argues that all further evidence connecting him to Olsson’s murder should have been suppressed as the fruit of the Miranda violation. Not so. Trudeau advised defendant of his Miranda rights. Defendant invoked those rights by declining to speak about the events surrounding his arrest. At that point, Trudeau ceased his questioning. Defendant reinitiated the conversation when he told Tmdeau he did not want to go to jail that night, after which Trudeau suggested defendant might “work off’ his offense by becoming an informant. Defendant indicated his interest, and a narcotics detective was summoned. While he and Trudeau waited for the detective, defendant made the statements at issue here. Thus, it was defendant who reinitiated the conversation of his own volition after Trudeau had acceded to his initial invocation of his right to remain silent. There was no Miranda violation. (Edwards v. Arizona (1981) 451 U.S. 477, 484-485 [68 L.Ed.2d 378, 101 S.Ct. 1880]; People v. Mickey (1991) 54 Cal.3d 612, 648-649 [286 Cal.Rptr. 801, 818 P.2d 84].) As noted, although the trial court suppressed defendant’s statements to Trudeau on the ground they were induced by Trudeau’s promise not to use them against defendant, it went on to find that the fingerprint evidence need not be suppressed, either because it was the result of “investigative serendipity,” or would inevitably have been discovered. Defendant contends the latter rulings were error. The Attorney General contends it was the trial court’s initial finding that defendant’s statements were involuntary that is the error here. The Attorney General argues that there is no substantial evidence those statements were induced by Trudeau’s promise not to use them because defendant spoke voluntarily before Trudeau made that promise. We agree. “In general, a confession is considered voluntary ‘if the accused’s decision to speak is entirely “self-motivated” [citation], i.e., if he freely and voluntarily chooses to speak without “any form of compulsion or promise of reward. . . .” [Citation.]’ [Citation.] However, where a person in authority makes an express or clearly implied promise of leniency or advantage for the accused which is a motivating cause of the decision to confess, the conf