WARNING: This book contains scenes of explicit violence and gore.

Something lurks in sewers, spreading, its hunger growing, waiting to emerge into the world above.

Martin is a plumber - normally a somewhat mundane occupation. But something's wrong. Drains are backing up all across town, toilets overflowing. There has to be an explanation. There has to be something in the sewers, blocking the pipes.

Some people believe that the sewers are home to giant alligators, or child-eating clowns, or mutant reptilian ninjas. But they're all wrong. What really lurks in the sewers is something far, far worse...