The Unger Institute of Mental Health is a behavioral health facility somewhere in New Jersey, where Tommy Jarvis was committed for psychiatric treatment following his traumatic experience at age 12 in June 1984, when he killed Jason Voorhees in self-defense. This occurred at the end of Voorhees's notorious first murder spree, among whose victims was Jarvis's mother. Jarvis was committed at the behest of his sister, who felt unable to help him through the trauma, and he was thenceforth kept as a ward of the state until turning eighteen. But by age 17, he was transferred to nearby Pinehurst Youth Development Center.