This exuberant, sixth installment of the Fortune Teller's Club Series focuses on Gena, the wise-cracking tomboy of their group. She needs to buy a fancy dress for a ball and dreads the shopping trip, but not because she hates wearing frilly dresses. Gena's afraid to look in the mirror. When she does, a strange girl with pigtails and a unibrow peers back at her.   Anne and Juniper, Gena's best friends, help her by trying mirror scrying and Ouija . . . to no avail. Gena's only comfort is a stray cat she's been sneaking into her bedroom at night. But one day she finds her secret kitty with someone else--the girl in Gena's mirror!