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 is more dangerous than anyone could have imagined. With the Gladers divided, can they all make it?