

01/06/1952
An FBI agent works with a refugee scientist and the Coast Guard to crack a Soviet spy ring in Boston.

George Murphy
as Inspector James 'Jim' Belden

Finlay Currie
as Professor Albert Kafer

Virginia Gilmore
as Millie / Teresa Zalenko

Karl Stepanek
as Alexi Laschenkov / Gregory Anders

Louisa Horton
as Mrs. Elaine Wilben

Peter Capell
as Chris Zalenko / Gino

Bruno Wick
as Luther Danzig

Vilma Kurer
as Mrs. Rita Foss

Ann Thomas
as Philadelphia Suspect

George Roy Hill
as Nicholas Wilben

Karl Weber
as FBI Agent Charlie Reynolds

Michael Garrett
as Michael Dorndoff aka Frank Torrance

Lotte Palfi Andor
as Anna Kafer

Ernest Graves
as Robert Martin

Robert Carroll
as Boldany

Wolfgang Zilzer
as August Helmuth

Bradford Hatton
as Harry Mason

Rosemary Pettit
as Mrs. Martin

Eva Condon
as Landlady

Steve Mitchell
as Samson

John Farrell
as Taxi Driver (uncredited)

Nancy Hale
as Mrs. Belden (uncredited)

Westbrook Van Voorhis
as Narrator (voice) (uncredited)

Mary Young
as Old Lady (uncredited)

Suzanne Moulton
as Sherry Belden (uncredited)
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