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...