Sister Ysabel is a consecrated vessel: a nun trained to draw a possessing demon out of a man’s body through the act of oral transfer, swallowing its seed so the Church can cast it down to hell. But the rite’s doctrine is silent on what happens when the demon refuses to leave — and this one does. Now Father Caelan, an old exorcist who has burned vessels before, must drive it out of her by means the Church calls depravity and he calls mercy. Explicit adult horror erotica.