Louis Mazzini (Price), a scheming, financially strapped aristocrat, resolves to bump off the eight relatives (all played by Guinness) that stand between him and a lucrative Dukedom. He devises extremely inventive ways to dispatch each member of the D'Ascoyne line, which includes a banker, a parson, an admiral, and perhaps most memorably, the stately Lady Agatha (not to mention the Duke himself). Though we know Louis won't get away with it, still murder was never so much fun.