Some demons possess bodies. Others possess institutions.Father Niccolo Paladina doesn't believe in exorcisms anymore. Three years ago he watched his mentor die during one, and he has spent every day since behind a desk in Rome — the priest-bureaucrat who investigates possession claims on paper so he never has to face one in person again.A young priest in Everett, Washington just went around the chain of command and begged the Vatican for help. Niccolo is being sent to reprimand him. Not to perform an exorcism.The bishop in Everett is too calm. The possessed are spreading like flu. And Arthur Vangeest — a Church assassin hunting the men who murdered his family — is already in town, swearing the conspiracy starts at the top.When the demons laugh at his prayers and burn themselves with holy water to prove God can't hear him, Niccolo has to choose: stay safe behind procedure, or become the exorcist he was trained to be.A religious horror thriller for readers of The Exorcist, Constantine, and Jim Butcher. Book 1 of the World of Shadows series — where demons are real, the Church has secrets, and faith is the only weapon that matters.