Max Ehrlich adapted his own novel for the screen in this fitfully amusing paranormal thriller. College professor Michael Sarrazin feels that someone else is inside him, and is led by his dreams to a small town where Margot Kidder (Black Christmas, Superman) has murdered her cheating husband. She senses something odd about Sarrazin too, even more so when he falls for Jennifer O'Neill (Scanners), who may or may not be his and Kidder's daughter. Regardless of its merits, this film will probably best be remembered for its poster art, which depicts an anguished Sarrazin being smashed in the testicles with a boat paddle. That's what happens when actors do things like turn down Midnight Cowboy. Director J. Lee Thompson later went on to direct the even less subtle Happy Birthday to Me.
~ Robert Firsching, All Movie Guide