Episode 2 begins with Kayce trying to live inside the new shape of his life. Monica is gone, Tate needs a father who can stay present, and the Marshals need a teammate who can follow a chain of command. Kayce wants the new beginning. The problem is that Montana keeps handing him old ghosts.
The Marshals operation centers on stopping a domestic terror attack, giving the series a cleaner federal-law-enforcement shape than the premiere. Kayce can track, read terrain, and move under pressure better than almost anyone in the unit, but tactical skill is not the same thing as trust. His teammates are still learning where the Marshal ends and the Dutton begins.
The title location gives the episode its real weight. The "Zone of Death" is not treated as a simple Easter egg. It is a physical reminder that the Dutton family survived by burying problems, literally and morally. When the case lands Kayce in that valley, the show turns a procedural investigation into a reckoning with family history.
By the end, Kayce has helped the team move through the case, but he has not outrun the questions around him. Harry Gifford does not need to accuse him outright for the tension to land. Everyone in the room understands that the badge does not erase the name, and that Kayce's future with the Marshals depends on whether he can stop treating the past as something only he is allowed to judge.