George Murphy

Inspector James 'Jim' Belden

Finlay Currie

Professor Albert Kafer

Virginia Gilmore

Millie / Teresa Zalenko

Karl Stepanek

Alexi Laschenkov / Gregory Anders

Louisa Horton

Mrs. Elaine Wilben

Peter Capell

Chris Zalenko / Gino

George Roy Hill

Nicholas Wilben

Wolfgang Zilzer

August Helmuth

Rosemary Pettit

Mrs. Martin

Steve Mitchell

Samson