The Alden children suspect that the other guests are somehow involved when things begin to disappear at the bed and breakfast where they are staying in Washington, D.C.
Anthony Monday and Miss Eells recover a magic lamp that was stolen from a warlock's tomb and is spreading evil to further the wicked ends of the thief.
When Cam Jansen and her friend Eric uncover a mystery while selling fudge door-to-door to raise money for the local library, Cam uses her photographic memory to foil a crime.