One Rolls-Royce belongs to three vastly different owners, starting with Lord Charles, who buys the car for his wife as an anniversary present. The next owner is Paolo Maltese, a mafioso who purchases the car during a trip to Italy and leaves it with his girlfriend while he returns to Chicago. Finally, the car is owned by American widow Gerda, who joins the Yugoslavian resistance against the invading Nazis.

Dr. Anansa Linderby is kidnapped in a medical mission in Africa by a slave trader. From this moment, her husband will do anything to recover her and to punish the bad guys, but that will be not an easy task.

Before he left for a brief European visit, symphony conductor Sir Alfred De Carter casually asked his staid brother-in-law August to look out for his young wife, Daphne, during his absence. August has hired a private detective to keep tabs on her. But when the private eye's report suggests Daphne might have been canoodling with his secretary, Sir Alfred begins to imagine how he might take his revenge.

Czechoslovakia, March 1939, on the eve of World War II. As the German invaders occupy Prague, inventor Axel Bomasch manages to flee and reach England; but those who need to put his knowledge at the service of the Nazi war machine, in order to carry out their evil plans of destruction, will stop at nothing to capture him.