The Scorch Trials

This is book 2 of the maze runner and already so much has gone wrong. at the end of the last book, the gladers were saved by some people who invaded wicked (people who previously had gladers) then in the beginning of the next book, those who saved them are already dead. Thomas lost his ability to do telepathy with teresa and she's also been taken back by wicked. they meet another kid who claims he was also from the maze, but no one knows him. Thomas thought after they left the glade all their troubles would be done, but thomas didn't realize that they were only half way there. with this who claims he's from the glade and the tattoos that suddenly appeared on everyones neck, and the note they found that teresa was a betrayer!