Lucy Angatel invites Hercule Poirot to dinner. Wanting to make fun of the famous detective, her guests stage a fake murder by the pool. Unfortunately, the victim is not playing the part! As his blood drips into the water, John Christow whispers one last word: "Henrietta." In the confusion, a gun ends up at the bottom of the pool.
Poirot's investigations will uncover a complex maze of family secrets and love affairs. It seems that everyone in this story is both suspect and victim; victim of love!
