The Haunting Of Alaizabel Cray (2004) is a Gothic steampunk horror/alternate history novel by Chris Wooding about a young man and an amnesiac girl fighting a cult in an alternate Victorian era London.

Thaniel leaves her under the guard of his old family friend Cathaline Bennett and begins making enquiries at the mental wards run by Dr. Mammon Pyke.

Perris tells them that Alaizabel was used by the Fraternity, an evil cult bent on world destruction and led by Dr. Mammon Pyke.

While consulting Crott, Thaniel meets Inspector Carver, who has been investigating a series of ritual killings known as the Green Tack Murders.

The Fraternity's ultimate plan is to use the killings to open a dimensional portal and allow London to be overrun by ancient gods called the Glau Meska.

While trying to save the final Green Tack victim, Thaniel realises that the culprit is a Wych-kin called Rawhead, summoned by the Fraternity to carry out the killings.

Inspector Carver comes up with a plan to stop the Fraternity from completing their evil scheme by invading their base and killing Lady Thatch, the only one who knows how to summon the Glau Meska.