the maze runner

 Thomas and the Glades find out what the pattern is, which causes most of the Glades to decide to make a run for the exit, knowing that it could be suicidal trying to take on the Grievers, but figuring that nothing could be worse than being stuck in the Glade waiting to be hunted by the Grievers. They succeed, only to find out that they were test subjects in an experiment conducted by WICKED, which stands for "World In Catastrophe: Kill zone Experiment Department." Gall, one of the Glades who always knew something was different about Thomas and hated him for it, appears at the laboratory to which the teenagers escape. He hadn't originally escaped with them, and he is acting as though he is being controlled. He moves to throw a knife at Thomas, but Chuck, the youngest Glaser and Thomas' friend, jumps in front of him 

Thomas finally decides that the best way to solve the Maze is for him to get stung and endure the Changing in order to retrieve some of his lost memory. His plan succeeds when the Grievers invade the Glade. Thomas goes through the Changing and learns from it that the boys in the Glade have above-average intelligence and are part of an experiment to test for survival of the fittest. The Creators took them from their homes when they were young, following a catastrophic event called the Flare. Some of them have had their brains altered. The ones who survive are to be used for an unidentified but important purpose. He also learns that he and Teresa were part of the group that planned the maze