Jack Hedley as Lt. Fred Williams

Almanta Suska as Fay Majors

Howard Ross as Mickey Scellenda

Andrea Occhipinti as Peter Bunch

Alexandra Delli Colli as Jane Forrester Lodge

Paolo Malco as Dr. Paul Davis

Cinzia de Ponti as Rosie

Cosimo Cinieri as Dr. Lodge

Daniela Doria as Kitty

Babette New as Mrs. Weissburger

Zora Kerova as Eva

Antone Pagán as Morales

Josh Cruze as Chico

Rita Silva as Scellenda's Landlady

Giordano Falzoni as Dr. Barry Jones

Lucio Fulci as Chief of Police

Barbara Cupisti as Heather

Martin Sorrentino as Police Detective

Michele Soavi as Newspaper Buyer (uncredited)

Sal Carollo as Dog Walker (uncredited)

Urs Althaus as Sex Show Performer #2 (uncredited)

Paul E. Guskin as Desk Sergeant

Marsha MacBride as Policewoman

Violetta Jean as Hospital Nurse

Cesare Di Vito as Telephone Tracing Technician

Elisa Cervi as Hooker

Chiara Ferrari as Susy Bunch

Rick Reid as Pool Hall Hustler (uncredited)

Jorge Umberto Quevedo as Pool Hall Player (uncredited)

Ralph Nieves as Detective Pagán (uncredited)

Tony Carrion as Policeman (uncredited)

Rene Clemente as Pool Hall Player (uncredited)

Nat Bush as Police Detective (uncredited)

James Sampson as Sex Show Audience Member (uncredited)