“Game of Thrones” recap: Jon Snow’s revenge comes, with a surprise

Now that showrunners David Benioff and D.B. Weiss have decided to start resolving the dangling plot threads of “A Song Of Ice And Fire,” our weekly installments of “Game Of Thrones” have become take-no-prisoners plot machines. “Oathbreaker” is a genuinely surprising episode of “Game Of Thrones,” both because of the reappearance of Rickon Stark (Art Parkinson) and his handler Osha (Natalia Tena)—a narrative resurrection entirely impossible to