HBO, and especially Game of Thrones, is known for penultimate episodes that deliver the biggest punches of the season. (See: Season 1, Ned Stark’s beheading; Season 2, the Battle of Blackwater Bay; Season 3, the Red Wedding.) Last Sunday’s “The Watchers on the Wall,” portraying the Battle of Castle Black, was no exception, and to be honest I have absolutely no idea how to write about it. It was an episode that nearly gave me a coronary—an hour of expertly choreographed, edge-of-your-seat suspenseful, heartbreaking battle. To paraphrase Special Agent Dale Cooper, it was damn fine television.