What was the connection between two murders committed almost twenty years apart? Between the wife of a mysterious millionaire and the man's mistress living in a neighboring villa? Between a beautiful showgirl and ugly blackmail? What link connected a strand of hair, a bloody leatter opener, a blurred footprint, and a battered corpse in the sandtrap of a private golf course?

Hercule Poirot had to put together the strange pieces of a puzzle that stretched halfway around the globe and into the most secret and sinister places of the human mind...