John Drew Barrymore
— Paolo Morand
Luisa Rivelli
— Anna Lugani
Lisa Gastoni
— Elisabeth Buckner
Jean Claudio
— Davide Lugani
Umberto D'Orsi
— Commissioner Perrotti
Peter Dane
— Dr. Bowen
Ombretta Colli
— Christine
Piero Gerlini
— The sergeant
Michele Francis
Aldo Bonamano
— Picchiatore Grasso
María Badmajew
Nini Rosso
Claudia Younes
Sergio Gibello
Elisa Mainardi
— The woman who sends the anonymous letter