Joshua got into an argument with his mother and departed from his Centralia, Illinois home on October 12, 1991. He climbed out his bedroom window and left with another boy. He has never been heard from again. According to one account, he was later sighted with another teenage boy, leaving a shopping center in a blue Ford Maverick with a friend, Terry Martin, and Martin's girlfriend. Martin and the other boy returned hours later. The car was mud-splattered and Joshua wasn't with him. He has never been heard from again. Martin is a suspect in Joshua's disappearance. Joshua and Martin burglarized a small grocery together prior to Joshua's disappearance. Joshua testified against Martin in that case, and Martin was ultimately sentenced to four years in prison. Joshua was also allegedly seeing Martin's girlfriend in secret, something Martin denies. His case remains unsolved.