Summer 1894: Mary Handley—now a private investigator—is asked by a convicted man's brother to reopen his murder case. A prostitute was butchered by a would-be Jack the Ripper years ago, and Thomas Byrnes, New York City's head of detectives, swears he found the right man and put him behind bars. But as Mary digs deeper, she finds corruption at the heart of the justice system, and disturbing evidence of other murders begins to surface—each one mimicking the Ripper's style, each one covered up by Thomas Byrnes. In her third investigation (after Brooklyn on Fire), Mary and reporter Harper Lloyd join forces to catch a killer and thwart the machinations of New York's elite.