Deep in the abandoned tunnels and caverns of London’s sewers, something is festering, something truly alien – voraciously hungry.

At first the Police suspect an elaborate robbery but when people start going missing and a Rapid-Reaction Team stumble upon the truth, the armed forces are brought to bear – and before long the underground warrens become one of the bloodiest conflicts the capital has ever known.

‘It’s a one way ticket to Hell – but the horror is unlikely to stop there!’