Twelve tantalising cases - the curious disappearance of Lord Listerdale; a newlywed's fear of a former admirer; a strange encounter on a train; a domestic murder investigation; a mild man's sudden personality change; a retired inspector's hunt for a murderess; a woman's impersonation of a duchess; a necklace hidden in a basket of cherries; a mystery writer's arrest for murder; an astonishing marriage proposal; the case of the Rajah's emerald; and a soprano's hatred for a baritone. All have one thing in common - the skilful hand of Agatha Christie.