Roderick Gordon & Brian Williams’ Tunnels rose from its fanatical underground following to become a New York Times best-seller. In this eagerly anticipated sequel, Will Burrows plunges ever deeper into the subterranean Colony to find his father. But while he searches, the ruling overclass known as the Styx plots to unleash a plague on Topsoilers. Can Will rescue his brethren from total annihilation? Or will he be too busy saving his own skin?