Michael Strait is a world-renowned photographer whose assignments lead him into investigating mysterious goings-on amongst the rich and glamorous and intrigue from far-flung places as Iraq, French Indochina, and Algiers.

Arthur Payne, recently out of prison, meets a stranger, Theo Gaunt, on a train and explains his situation. A few days later another stranger makes a curious proposition. Arthur should participate in a fake robbery and remove some imitation jewellery from the stranger's own safe.