Mario Gerosa
Antonio Sabàto
Giulia Torresi
Uschi Glas
Lt. Renzi
Franco Fantasia
Concetta De Rosa
Petra Schürmann
Palmieri
Ivano Davoli
Wanda
Linda Sini
Giovanni Rau
Nello Pazzafini
Anna's Maid
Carla Mancini
Hotel Manager
Enzo Andronico
Agent
Fulvio Mingozzi
Nestore Cavaricci
Anna Sartori / Maria Sartori
Marisa Mell
Inspector Vismara
Pier Paolo Capponi
Man (uncredited)
Armand Cava
The Doorkeeper (uncredited)
Ermelinda De Felice
Parish priest (uncredited)
Filippo Del Bello
Asylum Patient (uncredited)
Vera Drudi
Dr. Harris (uncredited)
Tom Felleghy
Prostitute (uncredited)
Lina Franchi
Hippie Girl on Couch (uncredited)
Camille Keaton
Asylum Patient with Doll (uncredited)
Alba Maiolini
Asylum Nurse (uncredited)
Ivana Novak
Policeman (uncredited)
Fulvio Pellegrino
Elena Marchi
Rossella Falk
Conductor (uncredited)
Andrea Scotti
Man at Cemetery (uncredited)
Alessandro Tedeschi
Maria Tedeschi
Member of the Methodist Church (uncredited)
Bill Vanders
Secretary (uncredited)
Sandra Wolff
Woman at the airport (uncredited)
Augusta Di Vincenzi
Kathy Adams
Marina Malfatti
The Priest
Renato Romano
Raffaele Ferri
Claudio Gora
Ines Tamburini - aka Toscana
Gabriella Giorgelli
Lt. Palumbo
Aldo Barberito
Barrett
Bruno Corazzari
Story
Edgar Wallace
Umberto Lenzi
Director
Screenplay
Conductor
Riz Ortolani
Original Music Composer
Producer
Novel
Cornell Woolrich
Production Designer
Giacomo Caló Carducci
Production Manager
Herbert Kerz
Sound Engineer
Guido Ortenzi
Lamberto Palmieri
Makeup Artist
Sergio Angeloni
Editor
Eugenio Alabiso
Other
E. Pandolfini
Camera Operator
Mario Sbrenna
Production Coordinator
Director of Photography
Angelo Lotti
Costume Designer
Giulia Mafai
Costume Assistant
Silvio Laurenzi
Paolo D'Orazio
Continuity
Rosaria Cilento
Roberto Gianviti
Hairstylist
Anna Graziosi
Sergio Borelli
Asmi Nardó
Assistant Editor
Amedeo Moriani
Assistant Director
Fulvio Barresi
Sound Effects
Renato Marinelli
Sound Mixer
Bruno Moreal