People v. Koehler CA2/6

CourtCalifornia Court of Appeal
DecidedJune 10, 2025
DocketB326685
StatusUnpublished

This text of People v. Koehler CA2/6 (People v. Koehler CA2/6) is published on Counsel Stack Legal Research, covering California Court of Appeal primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
People v. Koehler CA2/6, (Cal. Ct. App. 2025).

Opinion

Filed 6/10/25 P. v. Koehler CA2/6

NOT TO BE PUBLISHED IN THE OFFICIAL REPORTS California Rules of Court, rule 8.1115(a), prohibits courts and parties from citing or relying on opinions not certified for publication or ordered published, except as specified by rule 8.1115(b). This opinion has not been certified for publication or ordered published for purposes of rule 8.1115.

IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA

SECOND APPELLATE DISTRICT

DIVISION SIX

THE PEOPLE, 2d Crim. No. B326685 (Super. Ct. No. 18F-04199) Plaintiff and Respondent, (San Luis Obispo County)

v.

ROBERT WILLIAM KOEHLER IV,

Defendant and Appellant.

Robert William Koehler IV appeals following a trial at which a jury convicted him of first degree murder (Pen. Code, §§ 187, subd. (a), 189). The jury also found true an enhancement for personal use of a deadly or dangerous weapon (knife or sharp cutting instrument) (id., § 12022, subd. (b)(1)). In a bifurcated proceeding, appellant admitted a prior conviction (id., § 215, subd. (a) (carjacking)) that qualified as both a strike and serious felony prior (id., § 667, subd. (a), (d), & (e)). The court sentenced appellant to a total of 56 years to life in prison. Appellant contends the court erred: (1) under Evidence Code section 352.21 by admitting appellant’s fictional writings, poetry, and rap lyrics; (2) in denying a new trial motion based on newly discovered evidence, which appellant claims the prosecutor failed to promptly turn over in violation of his rights; (3) by instructing on flight pursuant to CALCRIM No. 372; and (4) in denying his request for a continuance to obtain a witness’s testimony. Appellant also asserts cumulative prejudice. We will affirm. FACTUAL AND PROCEDURAL BACKGROUND Prosecution Case On January 9, 2018, Kristen Marti and appellant arranged to meet. According to the prosecution, appellant “targeted [Marti] as a prostitute, plied her with tiletamine-laced cocaine . . . slit her throat, and then . . . put rocks on top of her in Prefumo Canyon hoping nobody would ever find her.” Marti had been Nickolas Reed’s girlfriend for about six years in January 2018. In a typical day, they would “wake up, do some heroin and maybe meth[amphetamine], and then try to get more.” Cocaine was too expensive for them. On January 9, 2018, Marti and Reed met their friend Phil Furia and all three used heroin. Reed saw Marti trying to set up a date on Craigslist. At around 6:00 p.m. while parked in Furia’s vehicle near Santa Rosa Park, Marti abruptly jumped out of the car and left without saying anything. Furia saw Marti walk toward a nearby parking lot. At 6:39 p.m., Marti sent Reed a text message indicating she was on Prefumo. Furia drove Reed to Prefumo Canyon, where

1 Unless otherwise indicated, undesignated statutory

references are to the Evidence Code.

2 they walked up and down the street. Reed saw Marti inside a red or maroon vehicle. Furia did not see who was in the car and had described the car differently. Reed heard a voice say, “Get away from the car.” Reed did not want to upset Marti by interfering, so he and Furia left. Reed later met up with friends, including Brent Perucca. Reed testified Perucca drove him back to the same spot on Prefumo Canyon, and Reed saw no one there. Perucca denied going to Prefumo Canyon Road with Reed but testified they spent time together that evening. Both testified they drove to Perucca’s residence, where Perucca went into the apartment around 12:45 a.m. and Reed slept in the car. Appellant began a messaging conversation with Marti on December 12, 2017. They discussed meeting, and Marti asked about a “donation,” code for payment for prostitution. On January 2, 2018, appellant asked if Marti wanted to do some cocaine. On January 3, Marti again asked about a donation as they discussed meeting. At around 3:00 p.m. on January 9, 2018, Heather Dwyer and appellant met at a parking lot after Dwyer responded to appellant’s help wanted ad. The encounter became a “hookup,” and they attempted to have sex in appellant’s vehicle. Appellant appeared to be under the influence of methamphetamine. After about 60 to 90 minutes, appellant dropped Dwyer off. Just after 5:00 p.m. on January 9, appellant messaged Marti asking if she wanted to “have some fun and do some go fast.” According to Sergeant Caleb Kemp, “go fast” referred to either cocaine or methamphetamine. They decided to meet at Santa Rosa Park. Marti asked if appellant had her donation. Appellant replied, “Yes of course.” At 6:16 p.m., Marti indicated

3 her friends were dropping her off at a gas station. Appellant said he was in a red Toyota truck. Brianna Koehler was appellant’s wife. January 9 was the anniversary of when they met. Appellant was supposed to pick Brianna up from work but did not. She called but could not reach him. Phone records showed Brianna called appellant at 7:03 p.m. and that the call could have gone to voicemail. For this call, appellant’s phone communicated with a cell tower sector covering Prefumo Canyon. A health application on appellant’s phone recorded two flights climbed at 8:35 p.m. At 9:11 p.m., Brianna sent the following text message: “Happy anniversary. Good night.” Phone records indicated appellant did not read that message until 9:56 p.m. The records also showed five calls from Brianna to appellant between 9:33 p.m. and 9:56 p.m., all of which went to voicemail because no cell tower could find his phone. At 9:56 p.m., appellant sent Brianna a message indicating he had just finished at the gym and would be home soon. Brianna went to sleep and woke up next to appellant the following morning. On January 10, Reed checked hangout spots, hospitals, and jails looking for Marti. Phone and Facebook records showed Reed made numerous attempts to contact Marti after her disappearance. On January 18, Reed filed a missing person’s report. Reed testified Marti struck him “[a] lot.” Reed indicated he struck her once, resulting in a bloody nose. Perucca testified he had to interrupt physical altercations between Reed and Marti. Another woman told police Reed struck her, choked her, and

4 pulled her out of the car by her hair. That woman later recanted, and Reed pled to misdemeanor domestic assault. At Marti’s trial, Reed denied the woman’s accusations. On March 25, 2018, law enforcement searched Prefumo Canyon. With the help of a cadaver dog, Marti’s body was found in a creek near the road. She was partially covered by rocks; about mid-torso up was visible. The rocks appeared movable by a single person and placed on top of her to hold her in the water. An investigator who walked from the roadway edge to the location of Marti’s body and back a total of ten times recorded six flights gained on the phone health application. An autopsy showed Marti died from sharp force injury to her neck. The manner of death was homicide. Initial toxicology results indicated Marti’s body contained cocaine, methamphetamine, morphine, codeine, and a compound associated with heroin use. Subsequent testing of her sample revealed tiletamine at .008 milligrams per liter. In reviewing appellant’s phone, law enforcement found a bookmark on an e-commerce website for the drug Telazol. Appellant’s laptop also contained a reference to Telazol. Telazol is an anesthetic drug comprised of tiletamine and zolazepam. Tiletamine is a dissociative anesthetic that can cause immobility, amnesia, and pain relief. Tiletamine is designated for animal use. If a 170-pound woman snorted a crushed Telazol pellet, fairly rapid loss of mobility and consciousness would ensue. A toxicologist from a large commercial laboratory found only one reported case of tiletamine in their database for about 360,000 blood samples tested between 2014 and 2021. Law enforcement linked the phone number appellant used to message Marti to an account owner named John Hill. The

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People v. Koehler CA2/6, Counsel Stack Legal Research, https://law.counselstack.com/opinion/people-v-koehler-ca26-calctapp-2025.