Farley Granger

Inspector Capuana

Sylva Koscina

Barbara Capuana

Silvano Tranquilli

Paolo Santangeli

Annabella Incontrera

Franca Santangeli

Chris Avram

Professor Casali

Sandro Pizzochero

Roberto

Krista Nell

Renata

Angela Covello

Bettina Santangeli

Fabrizio Moresco

Piero

Andrea Scotti

Gianni

Irene Pollmer

Giannina

Luciano Rossi

Gastone

Ivano Staccioli

The Liar

Nino Foti

Jessica Dublin

Rossella

Paul Oxon

Mauro

Philippe Hersent

The Questor

Nieves Navarro

Lilly

Femi Benussi

Serena

Bruno Boschetti

Policeman

Benito Stefanelli

Lilly's husband

Luigi Ciavarro

Milla Johansson

The first victim (uncredited)

Roberto Bianchi Montero

Director

Italo Fasan

Writer

Luigi Angelo

Screenplay

Roberto Bianchi Montero

Screenplay

Italo Fasan

Story

Rolando Salvatori

Editor

Eugenio Florimonte

Producer

Giorgio Gaslini

Original Music Composer

Fausto Rossi

Director of Photography

Massimo Bolongaro

Art Direction

Oscar Capponi

Costume Design

Angelo Faccenna

Executive Producer

Mario Pellegrino

Executive Producer

Oscar Capponi

Costume Designer

Fulvia Dulac

Hairstylist

Liliana Dulac

Makeup Artist

Francesco Vitulano

Production Manager

Vitantonio Ricci

Special Effects

Roberto Alberghini

Sound

Maurizio Gennaro

Camera Operator

Piero Orsola

Still Photographer

Gianfranco Turini

Assistant Camera

Bruno Sarandrea

Assistant Editor

Produzioni Cinematografiche Romane (P.C.R.)