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
CinemaSerf
Charles Booth won an Oscar for his writing on this early drama-documentary depicting the hunt by the FBI for an established network of Nazi fifth columnists long since operating in the USA. It falls to agent "Bill Dietrich" (William Eythe) to infiltrate the cell and to find out who is ultimately giv...