Roger Moore
— Lord Brett Sinclair
Tony Curtis
— Danny Wilde
Laurence Naismith
— Judge Fulton
Terence Morgan
— Carl Foster
Imogen Hassall
— Maria
Alex Scott
— Coley
Michael Godfrey
— Dupont
Neal Arden
— Inspector Flavel
Joan Collins
— Sidonie
Robert Hutton
— Frank Rocco
Robert Rietti
— Torino
Ian Thompson
— Vasile
Ferdy Mayne
— Count Sangallo
Jean Marsh
— Nicola
Arnold Diamond
— Brusati