The body of a merchant seaman, reported lost overboard in the Mediterranean, is washed up on the south coast of England with a bullet in his head.

Duval investigates the death of an illegal immigrant killed after he disembarked from a freighter at New York.

Duval is on the trail of forger Eddie Keflik, who has blackmailed a clown in a traveling circus into working for him.

A man extorts a large sum of money from an insurance company. Interpol begin a tireless operation to track the man through countries that don't have Interpol agreements.

The value of paintings by Hugo Ballard begins to soar after his death, so why would his widow slash one of his paintings?