Two episodes of the TV series "The Persuaders" joined into a movie. Two playboys investigate crimes along the French Riviera.

In this comedy, set during the Nazi occupation of France, Peter Sellers plays most major male parts, so he stars in nearly every scene, always bumbling in inspector Clouseau-style.

Henry Jekyll was always the outsider, a bungling and awkward buffoon, relegated to waiting for his invitation to participate in life that never arrived: until he discovers a medical formula developed by a dead uncle, which claimed to turn 'a man of timid disposition into a bold, fearless dragon'. Taking a draught of the elixir Henry is transformed into suave, sophisticated and highly desirable Teddy Hyde. Armed with his new persona, Teddy is ready to face the world; but is Henry ready for the consequences?

The first World War is in its third year and aerial combat above the Western Front is consuming the nation's favored children at an appalling rate. By early 1917, the average life-span of a British pilot is less than a fortnight. Such losses place a fearsome strain on Gresham, commanding officer of the squadron. Aces High recreates the early days of the Royal Flying Corps with some magnificently staged aerial battles, and sensitive direction presents a moving portrayal of the futilities of war.

On the French Riviera, movie producer Max Poulton is on location shooting a film starring his lover, Gina Bertini. But when the rueful Max ends his fling with Gina to return to his loyal wife, Carol, the jilted actress threatens to reveal details of their affair to Carol. Later, at a party at Max's villa, investigator Carliss arrives with news that Gina has been killed and that Max is a murderer suspect.

Police in Paris recruit an English ship's officer (Michael Craig) to help trap counterfeiters by joining them.