On the evening of May 23, 1982, 13-year-old Sarah Ann Geer left a friend’s house in Cloverdale, California, and walked into town. It would take 44 years, and a technology nobody had imagined, to name the man who killed her.
The last place anyone remembered seeing Sarah was a video game arcade on Cloverdale Boulevard. The next morning, two children playing behind an apartment building on Main Street found her body at the end of an alleyway. It was, as far as the Cloverdale Police Department could recall, the town’s first homicide.
The day after she was found, an officer named Lawrence Pina sat down with a local man in his early twenties named James Oliver Unick. The interview was brief and friendly. Unick said he had been with friends. Nobody verified the alibi, because in 1982 there was nothing to verify it against. What the department did do — the single decision that mattered more than any other — was collect the physical evidence and keep it.
In 2003, a senior criminalist with the California Department of Justice developed a full male DNA profile from that 1982 evidence. It matched no one in any law enforcement database, and it sat there for eighteen more years. CODIS, the national DNA database, can only find a person who has already been entered into it; if a suspect has never been convicted of a qualifying offense, a search comes back empty every time it is run. That structural blind spot is what kept this case frozen.
In 2021, Cloverdale reopened the file, brought in private investigator Kevin Cline, and asked the FBI for help. Using familial genealogical databases, the FBI narrowed the source of that profile to one of four brothers. Agents put one of them under surveillance and collected a cigarette he discarded in public — abandoned DNA, which courts have long held carries no expectation of privacy. It matched.
Unick was arrested at his home in Willows in July 2024. The trial ran roughly a month in Sonoma County. He testified in his own defense. The jury deliberated about two hours and had to answer two separate questions: whether he killed her, and whether the killing happened during a sexual assault. Under California law, the second answer removed every sentencing option but one.
On February 13, 2026, the jury returned a guilty verdict on first-degree murder with the special-circumstance finding. On July 10, 2026, Judge Laura Passaglia sentenced James Oliver Unick to life in prison without the possibility of parole.
Sources and credits
This account is built from the Sonoma County District Attorney’s Office press releases of February 13, 2026 (verdict) and July 10, 2026 (sentencing); Press Democrat reporting on the preliminary hearing, which is the source for the detail about Officer Lawrence Pina’s May 24, 1982 interview; the Cloverdale Police Department’s July 2024 arrest release; and Newsweek and KPTV coverage. The photograph of Sarah Geer is a public-record identification photo released by the District Attorney’s office; the arrest photograph was released by Cloverdale PD. All other imagery in the video is clearly credited illustrative stock. No news-broadcast footage was used, and no crime-scene or victim imagery appears.
Related reading
No well-reviewed book has been written about this case specifically. Rather than pad this section with an unrelated true-crime title, here is an honest, case-scoped search: Sarah Geer / Cloverdale cold case on Amazon.
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