When a 200-year-old witch attacks her, sixteen-year-old bookworm Lainey Styles is determined to find a logical explanation. Even with the impossible staring her in the face, Lainey refuses to believe it—until she finds a photograph linking the witch to her dead mother. After consulting a psychic, Lainey discovers that she, like her mother, is a Keeper: a witch with the exclusive ability to unlock and wield the Grimoire, a dangerous but powerful spell book. But there’s a problem. The Grimoire has been stolen by a malevolent warlock who is desperate for a spell locked inside it—a spell that would allow him to siphon away the world’s magic. With the help of her comic-book-loving best friend and an enigmatic but admittedly handsome street fighter, Lainey must leave her life of college prep and studying behind to prepare for the biggest test of all: stealing back the book.

Lainey’s normal, bookworm life no longer exists. With her family murdered by the Master, she joins forces with a group of Supernatural rebels. But as she struggles to cope with her new role as Keeper and the uncontrollable power it gives her, Lainey realizes that magic does indeed leave a mark—but it’s not always physical. Ty isn’t one of the good guys. He’s done terrible things, and he won’t stop until he gets what he wants. Even if it hurts. Even if it means betraying the girl he loves…again. For Maggie, all her comic book dreams have come true, and her new life as a Shifter is just beginning. But with war closing in, is it truly a dream or a death sentence? In the ultimate battle for power, Lainey, Ty, and Maggie must face-off against the Master, and work together to discover the greatest weapon of all. Seek and you will find.