The Conspirators - 1944 - Hedy Lamarr, Paul Heinreid, Peter Lorre

Vincent Van Der Lyn, a Dutch freedom fighter in World War II, is forced to neutral Lisbon to escape the Germans. There he meets a small band of underground conspirators. The group's leader, Ricardo Quintanilla, knows that one of their number is spying for the Germans, and needs Van Der Lyn to help identify the traitor. Hedy Lamarr never looked so beautiful.
Directed by Jean Negulesco
Screenplay by Vladimir Pozner, Leo Rosten
Based on The Conspirators 1943 novel by Frederic Prokosch (credited as Fredric Prokosch)
Produced by Jack Chertok
Starring Hedy Lamarr, Paul Henreid, Peter Lorre, Sydney Greenstreet