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

as Inspector James 'Jim' Belden

as Professor Albert Kafer

as Millie / Teresa Zalenko

as Alexi Laschenkov / Gregory Anders

as Mrs. Elaine Wilben

as Chris Zalenko / Gino

as Luther Danzig

as Mrs. Rita Foss

as Philadelphia Suspect

as Nicholas Wilben

as FBI Agent Charlie Reynolds

as Michael Dorndoff aka Frank Torrance

as Anna Kafer

as Robert Martin

as Boldany

as August Helmuth

as Harry Mason

as Mrs. Martin

as Landlady

as Samson

as Taxi Driver (uncredited)

as Mrs. Belden (uncredited)

as Narrator (voice) (uncredited)

as Old Lady (uncredited)

as Sherry Belden (uncredited)