Inspector Capuana
Farley Granger
Barbara Capuana
Sylva Koscina
Giannina
Irene Pollmer
Gastone
Luciano Rossi
The Liar
Ivano Staccioli
Nino Foti
Rossella
Jessica Dublin
Mauro
Paul Oxon
The Questor
Philippe Hersent
Lilly
Nieves Navarro
Serena
Femi Benussi
Policeman
Bruno Boschetti
Paolo Santangeli
Silvano Tranquilli
Lilly's husband
Benito Stefanelli
Luigi Ciavarro
The first victim (uncredited)
Milla Johansson
Franca Santangeli
Annabella Incontrera
Professor Casali
Chris Avram
Roberto
Sandro Pizzochero
Renata
Krista Nell
Bettina Santangeli
Angela Covello
Piero
Fabrizio Moresco
Gianni
Andrea Scotti
Writer
Italo Fasan
Story
Screenplay
Roberto Bianchi Montero
Director
Luigi Angelo
Editor
Rolando Salvatori
Original Music Composer
Giorgio Gaslini
Director of Photography
Fausto Rossi
Costume Design
Oscar Capponi
Art Direction
Massimo Bolongaro
Producer
Eugenio Florimonte