Before Astarti's mother abandoned her to the deadly ocean tides, she gave her infant daughter a parting gift: a tattoo known as the Griever's Mark, meant to carry her into death. Saved by Belos--long ago exiled by his people, the Earthmakers--Astarti has spent her life using her control of the energy world, known as the Drift, to help Belos gain power throughout the kingdom of Kelda. Though she hates her master, the Leash he has anchored deep within her makes defiance impossible. But when Logan, a handsome Earthmaker with his own reasons to hate Belos, recognizes that Astarti may be more than she seems, she begins to unravel Belos's lies: about her Mark, about her parents, and, most importantly, about her power. These questions, however, lead to one even more chilling: what does Belos really want?

As the growing conflict forces Logan to embrace his newly discovered heritage, he fights to control a power he has long kept buried-a power that threatens everything he has tried to make of himself. Desperate to spare Astarti yet another burden, he tries to hide his crumbling control, but she has long since learned to recognize a lie. As Logan becomes a danger to himself and those around him, Astarti must find a way to help him, even if he doesn't want it. Unfortunately, Astarti has other problems. Good and evil wear ever-shifting faces, the right course of action grows increasingly unclear, and the stakes are only getting higher. In this final installment of The Griever's Mark trilogy, Astarti must decide, once and for all, what she stands for-and what she is willing to sacrifice

Who is Logan's father? The question has been whispered behind his back all his life. He's ignored it, forced himself not to care, but when Belos starts demanding an answer to this very question, it takes on a new and disturbing significance. As the race to answer this question begins, others rise in its wake, unearthing a mystery that could shake the very foundation of Earthmaker life, a mystery that could shake the whole world apart. But Astarti has more immediate concerns. Logan is in grave danger, and she's desperate to get to him before he is destroyed--body, mind, and soul. (Mature YA fantasy)