Thomas and the other gladers have made it to the safe haven.
But Thomas can't seem to forgive Teresa after death.
They soon find out that their paradise isn't always what it seems.
What if Teresa didn't die? What if it was Brenda instead? The Paradise has been found, and Thomas needs answers. This isn't his home.
It took time, but Teresa has been forgiven. She and Thomas have finally became friends and put the past behind them. Because that 'big mistake' saved Thomas' life. It's about time he finally realized it.