"Can a couple keep important secrets from Communist spies?"
Ruth Roman
as Ann Hemple Nicholson
Sterling Hayden
as John Emmett
Werner Klemperer
as Dr. Frederick Simmons
Richard Gaines
as Dean William Brant
Charles Davis
as Edward Manning Kirkpatrick aka Kirk
Jeanne Cooper
as Helen Bethke
Peter Hansen
as Karl Plesser
Karl Ludwig Lindt
as Dr. Reinhart Kissel
John Mitchum
as Bud--Deputy Sheriff
John Frederick
as Sheriff
Leonard Bremen
as Collision Shop Owner (uncredited)
Sidney Clute
as Mechanic (uncredited)
Ken Curtis
as FBI Agent Jim Anderson (uncredited)
Harry Hines
as Motel Owner (uncredited)
Tom McKee
as Man from Sanitarium (uncredited)
Bert Stevens
as Motorcycle Cop (uncredited)
Henry S. Kesler
Director
Donald Hamilton
Novel
Producer
Paul Sawtell
Original Music Composer
Bert Shefter
Kenneth Peach
Director of Photography
Aaron Stell
Editor
Screenplay
Story
Turnley Walker
Ralph E. Black
Production Supervisor
Horace Hough
Assistant Director
James Richard
Sound Editor
Francis J. Scheid
Sound
Einar Bourman
Wardrobe Designer
Adele Parmenter
Betty Pagel
Casting
Costume Design
Rudi Feld
Art Direction
Herman N. Schoenbrun
Set Decoration