In the epic finale to the saga, Thomas leads his group of escaped Gladers on their final and most dangerous mission yet. To save their friends, they must break into the legendary Last City, a WCKD-controlled labyrinth that may turn out to be the deadliest maze of all. Anyone who makes it out alive will get answers to the questions the Gladers have been asking since they first arrived in the maze.

Robert Neville is the last human survivor in what is left of New York City. A pandemic has left only 1% of the population alive and most of those who survived are no longer human. The infected, now lurking in the shadows, watch Neville's every move. Perhaps mankind's last, best hope, Neville is driven by the only one remaining mission: to find a way to reverse the effects of the virus using his own immune blood.

A thriller centered on the threat posed by a deadly disease and an international team of doctors contracted by the CDC to deal with the outbreak.