Iraklis is a mysterious Greek terrorist group - A rogue offshoot of the communist party. At its head is a man with many names - an elusive master assassin who has been in exile for ten years. Alex Mavros is a half-Greek, half-Scottish investigator - a man driven by the desire to find his missing brother, last heard of at an underground resistance meeting during the dictatorship. Grace Helmer is an American who saw her father murdered when she was a child. Iraklis was responsible. Two businessmen are murdered in Athens. The trademark piece of olive wood is found with the victims' bodies. Iraklis is back. And Grace Helmer employs Mavros to track down her father's killer.