"Set in a futuristic, hostile Orleans landscape, Fen de la Guerre must deliver her tribe leader's baby over the Wall into the Outer States before her blood becomes tainted with Delta Fever"--Provided by publisher.

Bella, Gwen, and the Lost Boys have escaped to Alnwick Castle, but it is not the safe haven they hoped it would be for the "cure" for the Horologia virus has mutated into something even worse--so the Duchess Alyssa and Maddox Hadder set out searching forthe virus's origin, an extinct poisonous apple, supposedly from a tree at the center of a labyrinth hidden deep within Germany and guarded by monsters.

With Everland and Umberland destroyed, Gwen, Pete, and Alyssa and the other survivors have taken refuge in Evergreen Village in the forest, where they plot to assassinate the Bloodred Queen, while trying to avoid her monstrous creations, and Doc works onhis cure for the Horologia virus--but with the Queen of England dead, and the King of Germany either dead or hidden away, who can they trust to save their devastated world?

Beyond the Titan wall lies the Feral Zone, and the only people who break quarantine and venture there are the "fetches", who are paid exorbitant sums to bring back items that were left behind when the wall went up--but Delaney McEvoy's father is there and she is being forced to find him and bring him back.

In a final effort to complete the blueprint for the cure, Thomas must rely on the Gladers, with full memories restored, but Thomas does not trust Wicked and he remembers much more than they realize.

Reveals how Thomas and WICKED built the Maze against the backdrop of an apocalyptic world.

Toward the end of World War Two Hitler unleashed the Gomorrah virus, which wiped out most of humanity and turned the rest into vampires, except for those like seventeen-year-old Sophie Harkness, who carry a genetic mutation that makes them immune--but when her best friend is murdered and attempts are made on her life, Sophie sets out to discover the dark secrets that lie at the heart of Haven, the last refuge of the immunes.