A beautiful heiress has been found dead on a train. A playboy has been stabbed through the heart during a costume ball. An elderly woman suspects that she is being slowly poisoned to death. A prince fears for his reputation when his fiance is embroiled in another man's murder. A forgotten recluse makes headlines after he is shot in the head. Who but Agatha Christie could concoct such canny crimes? Who but Belgian detective Hercule Poirot could possibly solve them?