Ages 9 to adult.A fantastic alien city buried deep underground. What wonders—and what dangers—is it hiding?From New York Times bestselling science-fiction author Douglas E. Richards, Trapped is the first book in a series loved by kids and adults alike. Praised for its enormous appeal to both reluctant and advanced readers, this breathtaking adventure has become a favorite for middle-grade readers everywhere.Ryan and Regan have just moved to the world’s most boring town. But when they discover their parents are part of a top-secret project called Prometheus, they’re plunged into a nonstop adventure that will be the ultimate test of their wit, courage, and determination. Soon they’re under attack, facing hostile alien worlds, mysterious alien technology, and unimaginable dangers.With their mother facing certain death, the siblings must race to solve a seemingly impossible mystery to have any hope of saving her. But if they save their mom, they’ll have no way to save themselves . . .