Allen Mabra: 2 books

When a gang of modern-day terrorists attack their parents, twelve-year-old Crys Delchant and his older sister, Taylok, are forced back into Rockworld, a unique cavern where crystals are instruments of death and prehistoric beasts proliferate. It has been more than ten years since either has been inside...

Gregory, Valea, their baby Crys and Taylok leave Rockworld and arrive in a small Wyoming town. Upon seeing Valea and Taylok, the clerk leaps to the conclusion that they are space aliens. He calls the town sheriff, but eventually tries to take matters into his own hands. The sheriff travels...