Details of Disappearance Martha's twin brother, Lawson Green, picked up from her hostess job at the Holiday Inn on April 15, 1987. They were driving back to their family's residence in White Bluff, Tennessee in a Monte Carlo with tinted windows that Lawson had borrowed, when the vehicle ran out of gas on Highway 46 near Fabric Road in Dickson County, Tennessee at approximately 9:00 p.m. This was about half a mile from the Holiday Inn. A photo of a similar car is posted with this case summary.
A family of four pulled in behind them and offered to help. Martha said she was scared and Lawson said she should come with him and the family so they could get gas, but she said she'd stay behind. Lawson left with the family to purchase fuel, leaving Martha alone in the car. He discovered she had vanished upon his return about ten to fifteen minutes later. Martha's handbag was still inside the vehicle, as were the keys. There was no sign of a struggle at the scene. She has never been seen again.
Authorities had a suspect in Martha's disappearance, Robert McKinley Richards. He was incarcerated in Florida on rape charges after she went missing. He took investigators to several places where he claimed he had buried Martha's body, but searches of those locations turned up no evidence.
Richards was subsequently murdered in prison and was never charged in Martha's case, but he is still considered the primary suspect in her disappearance. Martha's case remains unsolved.
- Dickson County Sheriff's Office
- Tennessee Bureau of Investigation
Updated 8 times since October 12, 2004. Last updated February 25, 2021; details of disappearance updated.