Cast
Steve Mitchell
Samson
Mary Young
Old Lady (uncredited)
Virginia Gilmore
Millie / Teresa Zalenko
Karl Stepanek
Alexi Laschenkov / Gregory Anders
George Roy Hill
Nicholas Wilben
Nancy Hale
Mrs. Belden (uncredited)
Finlay Currie
Professor Albert Kafer
Louisa Horton
Mrs. Elaine Wilben
Wolfgang Zilzer
August Helmuth
George Murphy
Inspector James 'Jim' Belden
Peter Capell
Chris Zalenko / Gino
Rosemary Pettit
Mrs. Martin