The line between good and evil is not always clear... For Father Grigory Santeal and his companions the lines are bold and their purpose evident: find the book of fallen souls, attain dominion over the Devil and reap vengeance on the faithful and pious. For former SISDE (Italian Secret Service) Agent Vincent Gallo the lines are blurred. Temptation and the obsession to seek the true meaning of power has him balancing on a frayed tightrope above salvation or damnation. And for Peter Cameron the lines are all but erased; he must either save his soul or save the life of his daughter and risk the annihilation of mankind. It is a journey into their beliefs, across three continents and through Hell and back as each man must face the real life consequences of standing beneath the Shadow Of The Devil.