Mimi has been practicing magic her whole life. She’s talented for a self-taught witch, but she’s always wanted a mentor. Her Great Aunt Imogen just happens to be a legendary magic user and teacher; not that Mimi would know. Imogen has ignored Mimi her whole life – that is until she needs her help. Mimi hops on the train to London reluctant to face the mystery that is her great aunt, more of a wicked witch than the sweet old woman you’d hope for.