London Underground

London is bleeding in the shadows — and something ancient is waking beneath its streets.



When gang enforcers across the city turn up mutilated and marked with arcane symbols, Detective Inspector Marcus Kaine is pulled into a case that defies logic and rattles his hard-won skepticism. A former SAS operative haunted by violent visions, Kaine is no stranger to darkness — but this? This is something else.



The symbols are more than just warnings. They’re invitations — to serve something older than the city itself. Something hungry.



With the reluctant help of DS Sarah Chen, a weary medical examiner, and Vera Blackwood, an ex-academic turned underground occultist, Kaine must navigate a tangled web of ancient gang traditions, forbidden magic, and the myth of the Hollow King — a slumbering entity fed by blood and bound by secrets buried deep within London’s forgotten Underground.



The deeper Kaine digs, the more the city warps around him. Time bends. Shadows whisper. And beneath it all, something stirs.



But some doors, once opened, don’t close. And some kings… don’t stay buried.