The Curia is broken, as Legion's corruption floods the streets of Rome. While the Vatican burns, Father Vieri must make his final stand against the demon that wears his face. Yet with his greatest weapon proven powerless against the Devil, can Vieri and Maria find another way to reclaim his body? Or will the horrifying secrets of Vieri's past turn out to be his undoing? All that is certain is that Legion's depravity has finally been unleashed... and it will take more than a priest to banish this terrifying demon back to Hell.