David Edwin Knight

George

Nancy Brilli

Hannah

Coralina Cataldi-Tassoni

Sally Day

Bobby Rhodes

Hank

Asia Argento

Ingrid Haller

Virginia Bryant

Mary the Prostitute

Anita Bartolucci

Woman with Dog

Antonio Cantafora

Ingrid's Father

Luisa Passega

Helga Haller

Davide Marotta

Demon Tommy

Marco Vivio

Tommy

Michele Mirabella

Hooker's Client

Lorenzo Gioelli

Jake

Lino Salemme

Security Guard

Maria Chiara Sasso

Ulla, partygoer with camera

Dario Casalini

Danny - Ulla's boyfriend

Eliana Miglio

Pam, girl with camera (TV Show)

Yvonne Fraschetti

Jacob's Girl

Bruno Bilotta

Jacob

Lamberto Bava

Sally's Father

Stefano Molinari

Demon on TV

Giovanna Pini

Girl in back of Jacob's car / Woman in Garage

Pascal Persiano

Joe (TV Show)

Fabio Poggiali

Muller, Bodybuilder

Lorenzo Flaherty

Partygoer

Marina Loi

Kate

Ettore Martini

Ingrid's Father (uncredited)

Franco Fraticelli

Editor

Dario Argento

Writer

Gianlorenzo Battaglia

Director of Photography

Lamberto Bava

Director

Dardano Sacchetti

Writer

Dario Argento

Producer

Simon Boswell

Original Music Composer

Franco Ferrini

Writer

Piero Bozza

Editor

Davide Bassan

Art Direction

Rosario Prestopino

Makeup Effects

Lamberto Bava

Writer

Ferdinando Caputo

Executive Producer