Tony Musante

Sam Dalmas

Suzy Kendall

Julia

Enrico Maria Salerno

Inspector Morosini

Eva Renzi

Monica Ranieri

Umberto Raho

Alberto Ranieri

Renato Romano

Professor Carlo Dover

Giuseppe Castellano

Monti

Mario Adorf

Berto Consalvi

Pino Patti

Faiena

Gildo Di Marco

Garullo

Rosita Torosh

Victim

Omar Bonaro

Police Detective

Fulvio Mingozzi

Police Detective

Werner Peters

Antique Dealer

Carla Mancini

Girl Watching TV

Giovanni Di Benedetto

Professor Rinaldi (uncredited)

Reggie Nalder

Needles (uncredited)

Maria Tedeschi

Old Lady in Fog (uncredited)

Aldo Barozzi

Passerby who calls the Police (uncredited)

Romano Targa

Policeman (uncredited)