Jack was married to Jeri Clayton and was often very affectionate to his step daughter Trish. In 1976 Jack revealed to Trish that her mother had been a hooker, and that her real father was a man named Jim Stanhope. In 1977 Jack began to become obsessed with his stepdaughter Trish. One night he went to Trish's apartment while she was alone and attacked her. Mike Horton arrived home in time and broke down the door. The two men began to fight until Trish hit her stepfather over the head with an iron, killing him.