Imagine a school in the year 2074 where students don't read history, but watch it happen around them; where running in gym class isn't around a track, but up a virtual mountain; and where learning about animals means becoming one through an avatar. Welcome to Cragbridge Hall, the most advanced and prestigious school in the world. Twins Abby and Derick Cragbridge are excited as new students to use their famed grandfather's inventions that make Cragbridge Hall so incredible. But when their grandfather and parents go missing, the twins must follow a mysterious trail of clues left by their grandfather. They must find out where their family is, learn who they can trust, and discover what secrets are hidden within Cragbridge Hall. Abby and Derick soon realize they are caught in a race with a fierce adversary to discover their grandfather's greatest secret — a dangerous discovery that could alter both history and reality. “A fantastical futuristic read that should engage kids and families.” — Brandon Mull Unabridged audio book