Thirteen years ago, New York City detective Julie Miller (Scarlett Johansson) ended the terror reign of satanic serial killer Father Sunday. The case made her a hero, and she has thrown herself into her work ever since. Now a new killer scrawls her name in an altar boy’s blood on the walls of a church crypt, dragging her back into the darkness she believed she had buried with him.
Aided by former prison chaplain Father William (Chiwetel Ejiofor), who heard Father Sunday’s final confession, and sharp rookie detective Gina Restrepo (Sasha Calle), Detective Miller will discover a filament linking a lineage of serial killers, from H.H. Holmes to the Zodiac, that could corrupt everything, and everyone, she loves with an evil that goes well beyond the mortal.