The Wolves of London (Obsidian Heart book 1)

Alex Locke is a reformed ex-convict, forced back into London's criminal underworld for one more job. He agrees to steal a priceless artefact - a human heart carved from blackest obsidian - from the home of a decrepit old man. But when the burglary goes horribly wrong, Alex is plunged into the nightmarish world of the Wolves of London, a band of unearthly assassins who will stop at nothing to recla...