Alan Blanchard as Wayne Connors

Judy Motulsky as Jeff Connors

J.C. Claire as Dr. Erin Burick

Dennis Falt as Dr. John

Mello Alexandria as Chris Alexander

Win Condict as The Monster

Rocky Fumarelli as Preston, wino #1

John Hatfield as Bunky, wino #2

Hy Pyke as Jack Dunn

Daphnae Cohen as Helen Dunn

Steven J. Hoag as Doug

Wendy Rastattar as Jennifer

Don Cummins as Rex

Dave Carlton as Drunk #1

Dale Caldwell as Drunk #2

Ken Stimson as Drunk #3

David Ridenour as Policeman at house

Gregory Clemmons as Chris' Uncle

Ed Fournier as Kid throwing frisbee #1

Prudie Butler as Kid throwing frisbee #2

Jack Kelly as Radio Announcer (voice)

Alejandro Voss as Police Chief

Bill J. Stevens as Dr. Risling (uncredited)

Marc Harvey as Nicholas, deck hand #2 (as Marcus Harvey)