 Millionaire Victor Danemore, living on the French Riviera, dies suddenly of a heart attack. His secretary, Dave Bishop, wants to know more about his employer s life. Surprisingly, not even his young wife knows anything about her husband s background or how he earned his fortune. Clues lead Bishop to Vienna and Stockholm, where he learns that Danemore was black-mailing people who cooperated with the Nazis during WW2.