In the famous final scene of Season 1, Daenerys proved to the Dothraki that she was both flame-retardant and ready to lead, and this week she was like, “Why change what works?” So “Book of the Stranger” ended with an almost identical scene! But in this case she managed to massacre all the pre-existing Dothraki leadership before asserting herself as their new leader. Probably the second most amazing event of “Book of the Stranger” was Sansa’s long-awaited reunion with her brother Jon Snow. It can’t be a Season 6 episode without Ramsay doing something truly reprehensible, and this week it was murdering Osha! (Which, aw, poor Osha.