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May Crawford always thought she was in control. But over the past few weeks, her life has changed dramatically. The Obsidian Circle is trying to convince her magically powerful younger brother, Jamie, to turn to the side of evil. To join the magicians, the same magicians who once tried to kill them. May asks her brothers Nick and Alan to save Jamie, but they are in terrible danger themselves. Nick, as always, doesn't know what to expect, and Alan is secretly conspiring with a demon, so May decides to fight the wizards herself. But it turns out that everything and everyone is not at all what they seem.