The Trials are over. WICKED have collected all the information they can. Now it's up to the Gladers to complete the blueprint for the cure to the Flare with a final voluntary test. But something has happened that no-one at WICKED has foreseen: Thomas has remembered more than they think. And he knows WICKED can't be trusted. The time for lies is over. But the truth us more dangerous than Thomas could ever imagine. Will anyone survive the Death Cure?