"His name is Joshua Knight. Once a respected explorer, the press now calls him the Tarnished Knight. He took the fall for a disaster in the Underworld that destroyed his career. The devastating event occurred in the newly discovered sector known as Glass House-a maze of crystal that is rumored to conceal powerful Alien antiquities. The rest of the Hollister Expedition team disappeared and are presumed dead. Whatever happened down in the tunnels scrambled...

"As they do each June, the Foxes have driven the winding roads of Appalachia to drop off their children for a two-week stay at their grandmother's. Here, twelve-year-old Thea can run free and breathe in the smells of pine and fresh bread and Grammie's handmade candles. But as her parents head back to suburban Virginia, they have no idea they're about to cross paths with a ticking time bomb. Back in Kentucky, Thea and her grandmother Lucy both awaken...