Keep an ear out for "You didn't learn anything from Thors. And you're embarrassed that I'd find ou..."; it hits harder than it has any right to. Thorkell gets a quiet moment that lands harder than any explosion could. Long-time viewers get a payoff: "How can Leif sail through the sea like this without getti..." is no longer a mystery. Everything escalates, including your blood pressure. The sort of episode that makes the credits feel rude.