Paul Ferguson
Marc Singer
Barbara White
Tracy Scoggins
Lab Assistant
Tommy Hinkley
Woman at Motel (as Raquel Rios)
Keisha
Panhandler
Daryl Haney
Animal Rights Activist (uncredited)
Michael McDonald
Dr. Glatman
Mary Woronov
Sarah Ferguson
Irene Miracle
Steve Malceno
Jonathan Farwell
Outsider (as Thomas W. Poster)
Tom Poster
Smith (as Donald Pugsley)
Don Pugsley
Wesson
Joseph Hardin
Belle
Diana James
Watson
John Lafayette
Key Grip
Mauro Fiore
Producer
Roger Corman
Stunts
Kurt Bryant
Writer
John Brancato
Director
Thierry Notz
Novel
Dean R. Koontz
Michael Ferris