"While a group of young actors rehearse a new musical about a mass murderer, a notorious psychopath escapes from a nearby insane asylum."
Barbara Cupisti
as Alicia
David Brandon
as Peter
Robert Gligorov
as Danny
Mary Sellers
as Laurel
Giovanni Lombardo Radice
as Brett
James Sampson
as Willy
Jo Ann Smith
as Sybil
Domenico Fiore
as Police Chief
Mickey Knox
as Old Cop
Michele Soavi
as Young Cop (uncredited)
Clain Parker
as Irving Wallace
Loredana Parrella
as Corinne
Martin Philips
as Mark
Ulrike Schwerk
as Betty
Piero Vida
as Ferrari
Richard Barkeley
as Dr. Porter
Sheila Goldberg
as Nurse
Dany Gordon
as Dancer
Claude Jurman
Mark Parkinson
Helen Porter
Dominique Portier
Rackel Roskoff
Frank Senica
Simone Sardon
Albert Schultz
Sandi Schultz
George Eastman
as Irving Wallace (mask scenes only)
Alfonso Giganti
as Journalist (uncredited)
Rosanna Landi
Editor
Dialogue
Donatella Donati
Producer
Renato Tafuri
Director of Photography
Screenplay
Director
Joe D'Amato
Valentina Di Palma
Costume Design
Davide Castrati
Sound Recordist
Pietro Tenoglio
Makeup Artist
Guido Anelli
Original Music Composer
Antonio Tacchia
Production Manager
Massimo Anzellotti
Foley Artist
Stefano Mainetti
Maria Grazia Mazzolini
Rubina Michettoni
Assistant Art Director
Giuliana D'Angeli
Assistant Editor
Steve Lucescu
Stunt Double
Kou Ami
Wardrobe Master
Enrico Grassi
Sergio Ukmar
Stunts
Hubrecht Nijhuis
Sound Engineer
Luigi Piergiovanni
Mirella Pedetti
Seamstress
Claudio Lattanzi
Assistant Director
Simon Boswell