When Geronimo\\\\\\\\\\\\\\\'s sister, Thea, is invited to teach a journalism class at a college on Mouse Island, she has no idea that she\\\\\\\\\\\\\\\'s going to be called on to help solve a mystery. But when a student disappears, it\\\\\\\\\\\\\\\'s up to Thea and five of her students to find out what happened. A nail-biting mystery ensues, complete with secret passages, underground tunnels, and more than a few surprises along the way. Readers will love following the clues to help Thea and her new friends through their first adventure together.