Steve Culver, a pilot haunted by his past, leads a desperate band of survivors through crumbling tunnels toward a secret government bunker. But the darkness is alive. Enormous, black-furred rats – mutated by radiation and led by a telepathic Mother Creature – are hunting for human blood. As the government’s horrific experiments come to light, Culver realizes these vermin aren’t just scavengers; they are a new, dominant species rising to claim the ruins.Trapped between a lethally irradiated surface and a subterranean nightmare, humanity’s time has run out. In the silence of the deep, the screaming has only just begun.