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

Luciano Rossi

Gastone

Ivano Staccioli

The Liar

Jessica Dublin

Rossella

Philippe Hersent

The Questor

Nieves Navarro

Lilly

Femi Benussi

Serena

Benito Stefanelli

Lilly's husband

Luigi Ciavarro

Milla Johansson

The first victim (uncredited)