Penny Emberly didn’t expect to fall head over heels for Alonso De Luca last summer–or to discover that he’s a witch. Together with their friend Corey Barrion, they managed to save her mother from a deadly spell. Now autumn has arrived, and Penny believes they can take on anything. But darkness is descending on the small town of Idlewood. Corey is desperate to undo the bloody legacy that made his family rich. The price, however, is steep: to unravel the magical bargain made by his grandfather, Corey must take a life. As Corey wrestles with an impossible choice, Alonso begins to change. The more he pushes the limits of his magic, the more volatile, violent, and possessive he becomes. When tragedy strikes one of their classmates, the trio is forced to confront a terrifying question: is Alonso being consumed by something that’s bent on the destruction of everyone around him–especially Penny and Corey?