At the request of his friend Ariadne Oliver (an eccentric mystery lover based on Christie herself), Hercule Poirot arrives at a sprawling Devon estate to partake in a weekend game of mock murder. But as the festivities get under way, the players start acting a little too suspicious. What's worse, the victim appears far too dead. Now Poirot and Oliver must find the real clues among the fake ones, discover the true motives among the false onde, and play detective to the very end - before someone else loses more than the game...