On a ship crossing the ocean, a worried woman thinks her husband wants to make people believe she is crazy or find a way to kill her so it looks like an accident. She faces him alone on the ship, they fight, and both fall into the water. The woman lives but her husband disappears. A shocking surprise shows who really saw the murder happen.

A spy thriller about Hans Minkler, an Austrian man who fights against the Nazis, but maybe he really works for them. The confusing story takes place in Europe before the war started.