THE CLIMB is an episode that works best on well-written conversation, despite the inherent excitement of the most obvious title reference, that of Jon Snow and the Wildings invading Westeros. Highlights here include the tete-a-tete between Roose Bolton and Jaime Lannister, and in particular the delightful battle of wits between Charles Dance and Diana Rigg, two actors who clearly love butting heads in a witty and intelligent way. The most-remembered part of the episode is, however, Littlefinger and his chilling "chaos is a ladder" speech, perhaps his finest moment of the entire show.