The thirteenth episode of The Walking Dead 's final season, titled is widely regarded as a standout for its experimental nonlinear structure and its chilling revelation of the Commonwealth's darker side. Key Plot Summary
The episode follows Aaron and Gabriel on a diplomatic mission for the Commonwealth to a secluded community called Riverbend, ostensibly to offer them membership. The situation rapidly dissolves into a massacre when Toby Carlson—revealed as an ex-CIA assassin working under Lance Hornsby's "surgical solution"—executes the Riverbend leader and begins purging the residents to find missing weapons. The Walking Dead 11x13