Spiral

In the fifth installment of the best-selling Tunnels series, titled Spiral, authors Roderick Gordon and Brian Williams introduce a chilling new threat to England: the Styx, malevolent creatures harboring a devastating secret that endangers all Topsoilers. Amidst this growing horror, protagonist Will Burrows and a group of former commandos are determined to confront this menace, even if it puts their lives at risk.