Five years have passed since Skiouros left Istanbul with his brother's remains and a nebulous goal to make the usurper prince Cem pay for Lykaion's death. Skiouros is older and wiser, and has come to understand the dreadful price that vengeance exacts from its wielders. Saved from the French authorities by Dragi, the Romani crewman of a Turkish galley, he and his friend Parmenio are bound once more for the east. But Dragi's aid in desperate times comes with a price: the Romani await Skiouros' return to the great city of Constantine, bringing about the conclusion of a series of events that has been building since those that first led to his flight five years ago. In the Ottoman capital, the populace prepares for a great festival, and for the first time in many years the Sultan's three sons are all present in the same place at the same time. And in the dangerous streets a sect of disenfranchised Romani plot a deadly coup to overthrow the Sultan and place one prince on the throne. Can Skiouros, Dragi, Parmenio and Diego thwart the mysterious Kingbreaker and save the lives of the Sultan's sons? The sequence of events that shattered Skiouros' life is coming to an end...