Sara Howard has opened her own private detective agency and is leading the charge on a brand-new case. She reunites with Dr. Kreizler, the formidable alienist, and John Moore, now a New York Times reporter, to find Ana Linares, the kidnapped infant daughter of the Spanish Consular. Their investigation leads them down a sinister path of murder and deceit, heading towards a dangerous and elusive killer.

A psychological thriller set in 1896 about the hunt for a serial killer responsible for the gruesome murders of boy prostitutes that have gripped New York City.