As seventeen-year-old Louisa struggles to control her new changeling powers while settling into her role as a maid at Coldthistle House, Mr. Morningside plans a fete for human guests, Upworlders, and a man claiming to be Louisa's father.

On a road trip to visit Jordan's uncle, Dan, Abby and Jordan notice that someone appears to be following them. Then Dan starts receiving phone messages from someone he didn't expect to hear from again - someone who died last Halloween.

"Best friends Neena and Josie spent high school as outsiders, but at least they had each other. Now, with college and a two-thousand-mile separation looming on the horizon, they have one last chance to be together--a three-day hike deep into the woods of the Pisgah National Forest. Simmering tensions lead to a detour off the trail and straight into a waking nightmare ... then into something far worse. Something that will test them in horrifying ways."--...