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Mark Morris

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 reclaim the heart. As he races to unlock the secrets of the mysterious object, Alex must learn to wield its dark power - or be destroyed by it.

Titan Books

Obsidian Heart

The Wolves of London (Obsidian Heart book 1)

Transported through time to the dank streets of Victorian London, Alex Locke seeks to unravel the mysteries of the Obsidian Heart, the enigmatic object to which his fate is inextricably bound. When a string of grisly murders takes place across the capital, Alex follows a trail that will lead him through the opium dens of Limehouse into the dark and twisted world of the Society of Blood, and ever closer to unlocking the secret of the Heart.

The Society of Blood

In the final volume of the thrilling dark fantasy trilogy, the Obsidian Heart, Alex Locke is still searching for his missing daughter. He is transported far into the future and then back into the past and the horrors of the First World War trenches, as gradually he pieces together the strange truth about the obsidian heart and his lost daughter.