Weird things lurk in the dark streets of London in 1925. After a bizarre shooting incident, Harry Stubbs, former heavyweight boxer and sometime debt collector, is coerced into helping a visitor from Shanghai. Mr Yang, an agent of the feared Si Fan Society with unusual powers, is seeking information about a dead man. Roslyn D’Onston was a journalist and black magician—and a leading suspect in the Jack the Ripper killings. D’Onston has been dead for thirteen years. But exactly how dead is he now? When Yang joins a cell of renegade Theosophists for a séance, things start to go terribly wrong and Harry finds himself caught in a battle between occult powers, with strange enemies and stranger friends. It will take all his deductive skills – and talent for throwing a killer punch – to survive against the all-too-real arts of necromancy…