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)

Italo Fasan

Writer

Italo Fasan

Story

Roberto Bianchi Montero

Screenplay

Roberto Bianchi Montero

Director

Luigi Angelo

Screenplay

Rolando Salvatori

Editor

Giorgio Gaslini

Original Music Composer

Fausto Rossi

Director of Photography

Oscar Capponi

Costume Design

Massimo Bolongaro

Art Direction

Eugenio Florimonte

Producer