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!

    Escaping over the orphanage wall to explore the outside world, Mandy discovers a tiny deserted cottage in the woods. All through the spring, summer, and fall, Mandy works to make it truly hers. Sometimes she "borrows" things she needs from the orphanage. Sometimes, to guard her secret, she even lies. Then, one stormy night at the cottage, Mandy gets sick, and no one knows how to find her--except a special friend she didn't know she had.