Constance Bennett marries war reporter Don Porter. On the way back to the US, their ship is sunk by a submarine. When they finally arrive, Porter is busy making broadcasts urging the country to vigilance; Miss Bennett is seeing.... some suspect old friends. They're just old friends, she insists, but it gradually dawns on Porter that she is a spy, the one that whispers callMadame Spy[.
It's directed by Roy William Neill. He is best remembered for directing many of the Rathbone-Bruce Sherlock Holmes movies of the era, but he was one of the survivors of the silent era, and as he struggled back into prominence, he excelled as one of the directors who were instrumental in the rise of film noir in the 1940s. This one is dark and visually striking with some fine camerawork by George Robinson, but while it's clearly a link in the evolution of noir, it's not there yet. Neill would direct a minor noir masterpiece,BLACK ANGEL, and die at the end of the year, 59 years old.