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
Story: Leo Rosten
Screenplay: Leo Rosten
Writer: J. Edgar Hoover
Producer: Louis De Rochemont
Director of Photography: Joseph C. Brun
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