The world has ended: the earth is scorched, and fever rages through the population. Out of the chaos, a boy emerges with the power to change everything: Thomas. This is the start of his story. An electrifying Maze Runner prequel, The Fever Code holds all the answers: How did WICKED find the Gladers? Who are Group B? Whose side are Thomas and Teresa really on? Lies will be exposed. Secrets uncovered. Loyalties proven. You'll never see the truth coming ...