After fighting a demon in the middle of Philadelphia, Zoe O'Brien wants nothing more than to return to her normal, if stress-filled, life as an assistant professor of history at Summerfield College. But she's an Elemental mage and that means when there's potential magical trouble on campus, the squirrels come to her. Who or what is the dark presence moving around campus? Why is it here and what does it want? Zoe struggles to come to terms with her...