Elenco - The Double
Ewa Aulin
Lucia
Jean Sorel
Giovanni
Lucia Bosè
Nora Tosatti
Silvano Tranquilli
Roger
Sergio Doria
Eddie Kennan
Antonio Pierfederici
Professor BergamoBruno Boschetti
Balestra
Giacomo Rossi Stuart
Giovanni's BrotherPupo De Luca
The Police Commissioner
Marilù Tolo
MarieBruno Alias
Waiter (uncredited)
Giuseppe Marrocco
Man in Tennis Club (uncredited)