In a darkly comedic twist on the usual London gangster setup, a trio of Australian crooks impersonate police officers to rob the city's underworld, cutting into the profits of notorious gang leader "Pearly" Gates. As Pearly discovers his girlfriend is secretly feeding information to the impostors, he joins forces with Scotland Yard to catch them - and along the way, the entire criminal underbelly of London descends into chaos as police and crooks join forces to take down a common enemy. With Peter Sellers at its helm, this 1963 comedy film brings a dash of anarchic humor to the familiar cops-and-robbers genre.