"In this Cold War drama, a woman suspects her son is a Communist spy."
Helen Hayes
as Lucille Jefferson
Van Heflin
as Stedman
Dean Jagger
as Dan Jefferson
Robert Walker
as John Jefferson
Minor Watson
as Dr. Carver
Frank McHugh
as Father O'Dowd
Richard Jaeckel
as Chuck Jefferson
James Young
as Ben Jefferson
Jimmie Dundee
as Taxi Driver (uncredited)
Douglas Evans
as Government Employee (uncredited)
Nancy Hale
as Nurse (uncredited)
Sam Harris
as Professor at Graduation Ceremony (uncredited)
Todd Karns
as Bedford (uncredited)
Leo McCarey
as John Jefferson (voice) (uncredited)
Lee Miller
as Policeman at Shooting Scene (uncredited)
David Newell
as FBI Agent (uncredited)
Vera Stokes
as Secretary (uncredited)
Fred Sweeney
as Cleaner (uncredited)
Margaret Wells
Screenplay
Director
Story
Harry Stradling Sr.
Director of Photography
Marvin Coil
Editor
John Lee Mahin
Adaptation
Robert Emmett Dolan
Original Music Composer
Producer
Edith Head
Costume Design
Emile Kuri
Set Decoration
Hal Pereira
Art Direction
Farciot Edouart
Visual Effects
Robert Russell Bennett
Orchestrator
William Flannery
Myles Connolly
Gordon Jennings
Alvin Ganzer
Assistant Director
Sam Comer
Wally Westmore
Makeup Artist
Gene Garvin
Sound Recordist
Gene Merritt