The Hellfire Conspiracy (Barker & Llewelyn Series #4)

In the latest adventure in what is "fast becoming one of the genre's best historical mystery series" (Booklist), roughhewn private enquiry agent Cyrus Barker and his assistant Thomas Llewelyn must track down London's first serial killer.

When Barker and Llewelyn are hired to find a girl from the upper classes who has gone missing in the East End, they assume her kidnapping is the work of white slavers. But when they discover five girls have been murdered in Bethnal Green, taunting letters be...