Isaac Shiffron has found his tool of revenge against Laura and the town that betrayed him: The FBI. Agent Bremble is Isaac's willing tool, seeking to punish both Eden and the corrupt FBI agents that protect it. In order to protect their town, Laura, Mark, Maggie, and Molly have to work together...because Bremble's strike team is headed their way, and the end of Eden is coming with it. Collects POSTAL #21-24.