Cast Down the Stars — Phoebe Matthews

When spies are caught in the borderlands, Glory joins an army of workers to repair a breach in the protective wall around their country. What begins as an adventure ends as a full scale disaster and Glory is called on to find answers in the stars to save the people she loves.

This YA novel was first published by Holt, Rinehart and Winston.
Matthews has been published by Avon, Dell, Holt, Putnam and Silhouette.