The ultimate game of cat-and-mouse is played out in a cosy English country house owned by celebrated mystery writer, Andrew Wyke. Invited guest Milo Tindle, a young rival who shares not only Wyke's love of the game but also his wife, has come to lay claim to her. Revenge is devised and murders plotted as the two plan the ultimate whodunnit. The audience is brought to points of both laughter and terror as the two men play, exchanging rôles as cat and then as mouse, until the heart- stopping conclusion of this high stakes game.