Incubus (1982)

He is the Destroyer.

In the small New England town of Galen, a young teenage boy claims he has dreams of young women being brutally raped and murdered. A doctor and the local sheriff discover that the boy's dreams are real and that a sinister cult might be behind the brutal murders. They must track down the vicious killer, who may be the indestructible incarnation of a demon spawned from hell.