Diane Sue Gilchrist was 14 when she vanished from Vancouver, Washington, in the late spring of 1974. She left home on May 29, 1974, and was never heard from again. At the time she was 4 feet 10 inches tall, about 100 pounds, with blond shoulder-length hair and blue eyes. Early reports said she may have intended to run away, but other accounts place her getting into a van with an unidentified man. Her mother reported her missing after two days with no word.

Decades later the case remains open with the Clark County Sheriff’s Office Cold Case Unit. Warren Leslie Forrest, convicted in 1978 for the murder of a young woman and suspected in several other 1970s Vancouver-area deaths and disappearances, is considered a person of interest but has not been charged in Diane’s case. Diane’s family continues to seek answers and the investigation is focused on locating her remains and any information that might explain what happened.

If anyone knew Diane, saw her on or after May 29, 1974, or has information about the van or the unidentified man, please contact investigators.