Before the Glade was built, before Thomas entered the Maze, a solar flare unleashed devastation on Earth. Mark and Trina saw it all, and they survived. But now a violent, highly contagious disease is spreading like wildfire. Worse, it's mutating, and people are going mad. Mark and Trina are convinced there's a way to save the remaining survivors from the madness, and they're determined to find it-if only they can avoid going mad and stay alive.
Spoiler alert: Read "The Maze Runner" first