After three British agents are assigned to assassinate a mysterious German spy during World War I, two of them become ambivalent when their duty to the mission conflicts with their consciences.
Madeleine Carroll
as Elsa Carrington
John Gielgud
as Richard Ashenden / Edgar Brodie
Peter Lorre
as The General
Robert Young
as Robert Marvin
Percy Marmont
as Caypor
Florence Kahn
as Mrs. Caypor
Charles Carson
as "R"
Lilli Palmer
as Lilli
Denys Blakelock
as Man (uncredited)
Sebastian Cabot
as Man (uncredited)
Tom Helmore
as Colonel Anderson (uncredited)
Andreas Malandrinos
as Manager (uncredited)
