Practical joker dies and leaves large sums to his relatives. They all have to perform suitably ironic tasks before obtaining the funds (snob Compton has to find employment as a domestic; crime novelist Sim has to commit a crime and got to jail; womanizer Middleton has to wed the first unmarried woman he speaks to; and wimpy clerk Cole has to stage a hold up and rob his his manager).
Very amusing comedy that puts its protagonists through the wringer, but leaves them better people after their ordeal, an interesting trait that only British films seem to have. An American film would have just let them have the money and be miserable, having learned nothing, with a heavy-handed moral tacked on. Great performances all around, especially Sim and Compton, whose story arc is genuinely moving without being treacly.
Primarily known for being Audrey Hepburn's feature debut (she's in it for less than a minute), but deserves to be well known on its own merits, not that minor bit of trivia.