Spiral
Popularity 11
The outer crust is under attack by the subterranean Styx who are turning ordinary humans into walking bombs and incubators for their eggs, and only Will Burrows and his band of retired commandos stand in their way--but the Styx also have problems of their own.
Underground areasAdventure and adventurersJuvenile fictionSubterranean CivilizationFictionScience fictionAdventure storiesAdventure fictionUndergroundChildren's fictionAdventure and adventurers, fictionEngland, fiction