There is a maniac at large, and Inspector Sholto of Scotland Yard is detailed to work with the Railway Police - something he needs about as much as a vivisection. The detective plunges through a tangled web of vicious deviants to solve a string of murders so heinous that every woman in London fears for her life." "As Lestrade tackles the case, many questions present themselves: Who is the legendary Blackfriars Dan? What are the secrets of the Seven Sisters? Whose body lies at Ealing? Will the London Transport System survive? Perhaps the most pressing, will Lestrade run out of steam?