Welcome to New Orleans- home of Mardi Gras, jazz music and voodoo. Eighth grader Melanie Belaforte is home for Spring break and itching for excitement. Late one night she discovers a hidden chamber and a secret journal in her deceased Aunt Florence's bedroom. The diary contains the writings of a mad woman, along with vague clues to the whereabouts of a ruby necklace that once belonged to Cleopatra. The ruby bestows upon the wearer the power to hear other people's thoughts- even the thoughts of the dead! And so the hunt begins. Melanie, her best friend Sybil, and a haunting specter unravel clues that take them from crumbling graveyards, to the busy streets of the French Quarter, and then into murky swamps, all to find the prize. But they need to watch out, because a murderous cult is matching them step for step, and they won't give up, ever.