Seventeen-year-old Martha Leanne Green, known as Leanne, disappeared from the side of Highway 46 in Tennessee on the evening of April 15, 1987. She had just finished a shift at a Holiday Inn in Dickson and was riding home with her twin brother, Lawson, when their car ran out of gas. A passing family stopped to help; Lawson went with them to get fuel and returned ten to fifteen minutes later to find Leanne gone. Her purse and car keys were left on the seat of the unlocked vehicle and there were no signs of a struggle. She had been wearing a white sweatshirt, faded blue jeans, and white high-top sneakers. Her pink prom dress and shoes were laid out at home for the prom scheduled the next day, and authorities have said they do not believe she ran away.

Investigators later considered Robert McKinley Richards a prime suspect after he allegedly confessed under hypnosis and pointed to burial sites, but he recanted and no charges were filed; searches based on his claims produced no evidence. The Dickson County Sheriff’s Office and the Tennessee Bureau of Investigation have kept the case open. Did anyone in the area at the time stop to help on Highway 46 that night or hear anything unusual around April 15, 1987?