Something is wrong with twelve-year-old Zee, who has returned after a year's absence; nobody knows where he was or what happened to him, but now he is distracted and violent, freaking out when he sees his friends, Justin, Nia, and Lyric, playing an odd game of hide-and-seek, and talking wildly about some danger that is approaching--and soon his friends are pulled into a shadowy world ruled by a monstrous, shape-shifting Seeker, forced to play a terrifying...

Elijah is building a fort in the woods behind his new home when he is greeted by a strange girl named Iris. At first she helps him work, but she soon insists on a game of hide-and-seek. So Elijah searches and searches for Iris . . . until it begins to get dark. Just as he yells that he has to go home, Iris suddenly appears, angry about being left alone in the woods. It's only the first troubling omen as Elijah grows more uncertain if he wants to spend...