The "war of nerves" which gripped the European continent in 1938, is the background for this war thriller starring George Sanders.

George Sanders
as Keith Wilson

Marguerite Chapman
as Ilse Von Preissing

Onslow Stevens
as Rudolph Von Preissing

Gale Sondergaard
as Gretta Van Leyden

Franklyn Farnum
as R.A.F. Officer (uncredited)

Byron Foulger
as Herr Van Leyden (uncredited)

Steven Geray
as Henri Rader (uncredited)

Alan Napier
as Col. Patterson (uncredited)

Art Smith
as Dutch Pastor (uncredited)

Leonard Mudie
as MacPhail (uncredited)