Espionage romance set in World War I and released shortly before conflict resumed in 1939. So the Germans are still the enemy, but there isn't yet much propaganda. It's a slow, slightly creaky melodrama but full of atmosphere and uncertainty and suspense. And Victor Saville directs with a little style.
Vivien Leigh is a French spy in neutral Sweden with a front as a dress shop owner which conveniently takes her into Paris to liaise between the underground and the British. Conrad Veidt is the head of German intelligence who is trying to shut down her network by any means.
Naturally, they fall in love. Veidt isn't much of a romantic lead, but can play mysterious German spies all day long. The role of the Stockholm based secret agent would have been ideal for Garbo. Still, Viv is enigmatic and glamorous enough while giving her most accomplished performance prior to arrival in Hollywood.
And she is photographed beautifully... But will they betray their homelands for love? Veidt would more or less repeat the denouement at sea two years later in The Spy in Black. Back in the golden age this was conventional genre material. But now it feels wonderfully exotic. A crackly relic of a time when cinema knew how to do romantic intrigue.