DNA identifies 1985 missing woman in Florida cold case homicide probe

DNA testing identified Rose Marie Gayhart, a former Dansville, New York resident who vanished in 1985, after remains found in a Florida canal were matched to family samples. The case, which had sat unresolved for decades, is now being handled as a homicide investigation.

Cape Coral police and other agencies said the remains were found by kayakers in May 2024 in a canal in northeastern Cape Coral. One local report said a teenager kayaking in the area came across a human skull, which helped lead investigators to the discovery. The Livingston County Sheriff’s Office in New York said it received confirmation from a Texas lab in May 2026, tying the remains to Gayhart.

NBC News Dateline reported that Gayhart was 23 years old when she was last seen alive outside a diner in Cape Coral on March 21, 1985. CBS News said the identification was made after human remains discovered in the canal two years earlier were examined and matched to the missing woman. The public identification was reported in July 2026.

The shift from missing-person case to homicide probe changes the work ahead. Investigators now have a name, a last known location, and a specific date to work from, which can reopen old witness statements, patrol logs, and search records around Cape Coral and Livingston County. It also gives detectives a new way to test whether any surviving physical evidence from the 1985 disappearance or the 2024 recovery can be compared with modern DNA work or other forensic analysis.

For cold-case watchers, this is the point where the file stops being an unidentified set of remains and becomes a reconstructed timeline: who knew Gayhart in March 1985, who saw her outside that diner, and what led her from Cape Coral to a canal in northeastern Cape Coral. The ethical line is simple. Public attention can help keep a name alive, but interference can compromise an active homicide inquiry. In a case like this, the useful work stays with records, verified timelines, and official updates, while detectives handle the witnesses, the evidence, and the unanswered question of how Rose Marie Gayhart died.