Crystal was last seen at approximately 5:30 p.m. at her family's residence in Pick Wick Apartments in Oklahoma City, Oklahoma on June 13, 1996. Her hair was tied up in a bun at the time. Crystal has never been heard from again. Crystal's stepfather, Benjamin Harry Crider Jr., was considered a suspect in her disappearance from the onset of the investigation. Authorities noticed injuries on Benjamin's body on June 14, 1996, the day following Crystal's disappearance. Benjamin appeared to have human bite marks on one of his arms and bruises on one of his shoulders. He claimed he sustained the injuries while replacing the brakes on the car owned by his wife and Crystal's mother, Tammi Jean Crider. Crystal's body has never been located. Foul play is suspected in her case due to the circumstances involved.