While Mary lies in a glass coffin aboard a ghost train heading west, her minions are awaiting her re-awakening by bringing lots of new souls into Everlost to serve her. Meanwhile Jackin' Jill has met Jix, a fur-jacker — a skin jacker who can take over the bodies of animals, most notably jaguars. Jix serves a Mayan god who collects Everlost coins, and has his own agenda. In the concluding volume of The Skinjacker Trilogy, Neal Shusterman reveals new sides of the characters of Everlost, who are pitted against each other in a battle that may destroy all life on Earth.

Nick the chocolate ogre wants to help the children of Everlost to reach the light at the end of the tunnel, and is slowly handing each child a coin which will release them from Everlost. But Mary Hightower wants to trap the children forever, and joins forces with Pugsy Capone, a death boss, who gains allies in a terrible way... Meanwhile, Allie has gone in search for her parents and joins up a group of skinjackers. But, as her search takes her further away from Nick and the children of Everlost, Allie uncovers a shocking secret... it seems that skinjackers are not actually dead... In this riveting sequel to the imaginative, supernatural thriller, Everlost, there is new dark force to be reckoned with.

Nick and Allie don't survive the crash, and now they are in limbo, stuck halfway between life and death, in a netherworld known as Everlost. Everlost is home to those who didn't make it to their final destination: A magical yet dangerous place filled with shadows where lost souls run wild. Shocked and frightened, Nick and Allie aren't ready to rest in peace just yet. They want their lives back. Desperate for a way out, their search takes them deep into the uncharted regions of Everlost. But the longer they stay, the more they forget about their past lives. And with all memory of home fading fast and an unknown evil lurking in the shadows, Nick and Allie may never escape this strange, terrible world. In this imaginative, supernatural thriller, Neal Shusterman explores questions of life, death, and what just might lie in between.