Before the Maze, before the Scorch, before WICKED even existed, the sun flares hit, turning their world upside down. Mark and Trina thought surviving that was the worst, but now a devastating disease is spreading in the U.S. With friends, they're on a mission to find a cure, tracing it back to those responsible. The plot twist involving a character from the first three books added an unexpected layer, and the ending, especially the Teresa revelation, was satisfying.

However, The Kill Order had too much action for my taste. While the hand-to-hand combat seemed unnecessary and prolonged, it overshadowed everything else. It didn't quite feel like a Maze Runner book as main characters were absent. Some lingering questions about the maze and trials were left unanswered, leaving me somewhat disappointed.