1. Other Books in series

2.  After the events in The Scorch Trials, Thomas is locked up in solitary confinement for three weeks. He is released and Assistant Director Janson admits to him and the other Gladers (including ones from group B that there is a cure for the flare and that they were not lying to them about it. Everybody (including Teresa) began to jump around. Janson then announces that some people, including Newt, are not immune to the Flare. He also warns them that many people in the outside world hate them because of their unnatural resistance to the Flare, and that if they escape they will most likely be in more danger.

4.  This is the final book in the series but is a prequel, this happened before everything else  Before WICKED was formed, before the Glade was built, before Thomas entered the Maze, Sun Flares hit the earth and mankind fell to disease. Mark and Trina were there when it happened, and they survived. But surviving the sun flares was easy compared to what came next. Now a disease of rage and lunacy races across the eastern United States, and there’s something suspicious about its origin. Worse yet, it’s mutating, and all evidence suggests that it will bring humanity to its knees. Mark and Trina are convinced there’s a way to save those left living from descending into madness. And they’re determined to find it—if they can stay alive. Because in this new, devastated world, every life has a price. And to some, you’re worth more dead than alive.

6.  http://mazerunner.wikia.com/wiki/The_Ki ll_Order