A classic new mystery series set in an old, mysterious lighthouse on the coast in Mystic, Maine. Twins Jen and Zeke have always known the old lighthouse is haunted. Now they have proof. One night, a mysterious girl appears in a flash of lightning, then disappears into thin air. The Mystic Lighthouse Bed and Breakfast is filled with weird noises. Something very strange is going on - and one of the guest will do anything to find out what the twins have discovered. Jen and Zeke live with their aunt Bee in the old Mystic Lighthouse. They must uncover the secrets deep within the old lighthouse before someone else does. Readers have a chance to solve the mystery along with the twins.