"The US Government tries to track down embedded Nazi agents in the States."
William Eythe
as Bill Dietrich
Lloyd Nolan
as Agent George A. Briggs
Signe Hasso
as Elsa Gebhardt
Gene Lockhart
as Charles Ogden Roper
Leo G. Carroll
as Col. Hammersohn
Lydia St. Clair
as Johanna Schmidt
William Post Jr.
as Walker
Harry Bellaver
as Max Cobura
Reed Hadley
as Narrator (voice)
Kenneth Konopka
as Saboteur
Bruno Wick
as Adolf Lange
Harro Meller
as Conrad Arnulf
Charles Wagenheim
as Gustav Hausmann
Alfred Linder
as Adolf Klein
Renee Carson
as Luise Vajda
Jack McKee
as Dr. Arthur C. Appleton
Rusty Lane
as Admiral
Harmon Jones
Editor
John Monks Jr.
Screenplay
David Buttolph
Original Music Composer
Norbert Brodine
Director of Photography
Barré Lyndon
Charles G. Booth
Story
Louis De Rochemont
Producer
Henry Hathaway
Director
Gertrude Kingston
Research Assistant
Frances C. Richardson
Researcher
William Sittel
Set Decoration
