Ostensibly, "Pearly Gates" (Peter Sellers) is a French couturier selling posh frocks, but we know in reality he's a crook. Imagine his chagrin when his latest crime falls foul of the police! Imagine how much worse it gets when he discovers that it wasn't the police at all, but a gang who "IPO" (Impersonate Police Officers). That's below the belt! Meantime, the rather supercilious police inspector "Parker" (Lionel Jeffries) starts to get embroiled in t...