A city of ancient secrets. A killer enacting centuries-old vengeance. A reporter who is the final target.

Disgraced investigative journalist Griffin Pike is chasing ghosts. Broke and desperate, he returns to his hometown of St. Augustine to cover a story that feels like a godsend: a bizarre, ritualistic murder at the heart of the city’s oldest monument, the Castillo de San Marcos. The victim is posed, the crime is theatrical, and the killer has a taste for history.

As the bodies stack up, each murder more brutal and symbolic than the last, Griffin is pulled deep into a conspiracy that stretches back three hundred years. Teaming up with a tough local detective, he follows a trail of cryptic clues left by a killer the media has dubbed the "Inquisition Killer"—a phantom who is meticulously re-enacting the punishments of a sadistic 17th-century priest.

But when the investigation unearths a lost history of betrayal and a secret society of vengeful descendants, Griffin makes a horrifying discovery: the list of targets is personal. His own family name is on it. He’s no longer just reporting the story. He is the final, bloody chapter.

In a city built on buried truths, can Griffin unmask a killer hiding in the pages of history before he becomes the final sacrifice?