

"MOST THRILLING PICTURE SINCE "HOUSE ON 92ND STREET"!"
An FBI agent works with a refugee scientist and the Coast Guard to crack a Soviet spy ring in Boston.
Director: Alfred L. Werker

Inspector James 'Jim' Belden

Professor Albert Kafer

Millie / Teresa Zalenko

Alexi Laschenkov / Gregory Anders

Mrs. Elaine Wilben

Chris Zalenko / Gino
Luther Danzig
Mrs. Rita Foss
Philadelphia Suspect

Nicholas Wilben