Gene LeBrock as Dr. Peter Houseman

Catherine Baranov as Sally Donnelly

Harry Cason as Dr. Mike Lester

David Wicker as Willy Carson

Jason Arnold as Tommy

Stephen Brown as Professor Lloyd

Tom Story as Professor Huston

Anna Colona as Patricia Kelly

Wally Doyle as Inspector

Laura Gemser as Prostitute

Serina Steinberg as Patricia's friend

Wayne Potrafka as Old professor

Tim Wright as Hopkins

Allison Stokes as Alice

George Eastman as Man in the office