Once there was a world's end. The forests burned, the lakes and rivers dried up, and the oceans swelled. Then came a plague, and fever spread across the globe. Families died, violence reigned, and man killed man. Next came WICKED, who, looking for an answer, found the perfect boy. This is the story of that boy, Thomas, and how he built a maze that only he could tear down. This prequel to the bestselling Maze Runner series holds the answers to readers' questions. How did WICKED find the Gladers? Who are Group B? And what side are Thomas and Teresa really on? Fans will never see the truth coming. Before there was the maze, there was The Fever Code.