Tarik Freitekh

The armor stood alone in a black room for twenty-eight years. On the second Tuesday in March, someone took it apart plate by plate and carried it out through a door a security guard opened for them. Halverton loses two things that night: a blackened suit of sixteenth-century plate armor made for a mercenary the chronicles called the Iron Penitent - and a night guard of nineteen years, who died at his desk with his chair pushed back, as though he had stood up to meet something.
Three weeks later, the killing starts. Detective Vera Kolstad has heard the recordings the murderer leaves behind: a long scrape of steel on hardwood, and a voice drowned inside a helmet asking each victim, patiently, to *say the true thing*. Every one of them worked at the museum. Every one of them signed the same single page in 1999. Four people come at the truth from four directions - a detective carrying a girl she failed to save; the conservator who restored the harness and knows what is scratched inside it; a true-crime podcaster who gave the killer his name and is watching a city fall in love with it; and the guard who opened the door and cannot remember why.
The armor is heavy. It is loud. It blinds its wearer, cooks him, and will drown him if he falls. It is not supernatural. It is worse than that. It works.*The Iron Penitent* is a slow-burn gothic crime novel about grief, institutional silence, and what it costs a city to turn a murderer into a legend.