Sister Felicity does not return to her room after prayers. The nun is found strangled in the confessional box. She is only the first of St. Cecilia's faithful to meet a gruesome end. The killer will not stop until this place of God is destroyed. It is up to DI Gilbert Markham and his loyal deputy DS Noakes to stop the murderer. Cruel secrets come to light that force Markham's girlfriend Olivia to face her own past. The body count in the monastery continues to rise, and once again, a violent evil proves devastatingly close to home. Please note this book was first published as Night's Black Agents.