Kristi Lynn Vorak vanished from a Tacoma foster home on Halloween night, 1982, ten days after her 13th birthday. She was last seen leaving the residence and stepping into the autumn evening; an unconfirmed sighting reportedly placed her at a Seattle bus depot about 30 miles north, but that lead was never verified. Kristi was five feet three inches tall, about 110 pounds, with brown hair, hazel eyes, and a birth defect that left her left middle finger roughly an inch shorter than usual.

Investigators initially treated her disappearance as a runaway, though she had no history of running. Her case was later added by the Green River Task Force in May 1993 to a list of probable victims of the Green River Killer because her disappearance fell within the killer’s active period in the Seattle–Tacoma area. Some investigators and researchers question that connection, noting Kristi’s age and lack of a prostitution record, which differ from the typical profile of those victims. No arrests have been made and her body has never been found. Anyone with information about Kristi, her last movements, or the foster home she lived in is asked to come forward.