The Death Cure - by James Dashner (3rd Book)

Paperback. The Death Cure is the final installment of the Maze Runner series, where Thomas and a group of escaped Gladers launch a final mission to rescue their friends and find a cure for the Flare virus. To do this, they must infiltrate the Last City, a heavily fortified WCKD-controlled labyrinth. Inside, they discover a final truth about the virus and WCKD's motives while battling Cranks and their own internal conflicts.