When Walter Day, the squad's newest hire, is assigned the case of the murdered detective, he finds a strange ally in the Yard's first forensic pathologist, Dr. Bernard Kingsley. Together they track the killer, who clearly is not finished with The Murder Squad . . . but why?

Filled with fascinating period detail, and real historical figures, this spectacular debut in a new series showcases the depravity of late Victorian London, the advent of criminology, and introduces a stunning new cast of characters sure to appeal to fans of The Sherlockian and The Alienist.