Italy, 1493. Returning from the new world to the old, Skiouros is confronted with lands ruled by a strict and unyielding religion, and which yet still contrive to be corrupt and debased, as the inquisition takes hold in Spain and the Vatican seethes under the rule of the Borgia family.

Through this world of intolerance, greed and wickedness, the former thief-turned-explorer finally sets his mind to that mission that has underlain his every move since leaving the great city of Istanbul some two years earlier: the death of the usurper sultan, Cem.

Gathering old friends and new, Skiouros travels the length of Italy in his quest for vengeance and the quieting of his brother's restless soul. But on his dreadful quest he will face more than mere physical danger, for beneath all his strength and will, does Skiouros have a heart black enough to commit murder in the name of revenge?