Sometimes a thunderstorm is just a thunderstorm. But not this time. Jane Madison's school for witches is in session, and the first order of business is an intricate Samhain ritual. Alas, in the midst of a sudden, unseasonable deluge, a classic Greek monster is released into the magic circle. Jane succeeds in vanquishing the beast, but only with the assistance of her sworn enemy, the Coven Mother of Washington, DC. Crisis averted, Jane would be perfectly happy to plan her wedding to her astral protector, David Montrose. But how can she look at seating charts when she's under attack by more monsters, the Coven Mother, and the highest law in the witchy land, Hecate's Court? All these disasters can't be coincidence. One of Jane's students must be a traitor. But will Jane find the turncoat before she loses everything—and everyone—she holds dear?