Tony Curtis
— Danny Wilde
Roger Moore
— Lord Brett Sinclair
Larry Storch
— Angie
Prunella Ransome
— Princess Alexandra
Gladys Cooper
— Grand Duchess Ozerov
Gary Raymond
— Sergei
Laurence Naismith
— Judge Fulton
Lionel Murton
— Ben
Kirsten Lindholm
— Marissa Nave
John Alderson
— Kyle Sandor
Rose Alba
— Madame La Gata
Anna Brett
— Bank Secretary
Joseph Fürst
— Yelker
Cyril Shaps
— Professor Ganguin
Georgina Simpson
— Magda
Arnold Ridley
— Uncle Rodney
Anouska Hempel
— Stewardess
Denys Peek
— Dante
Timothy Parkes
— Walther
Yuri Borienko
— Nikolai
Raymond Young
— Inspector Mansour