Theresa DeLucci, a reviewer for Tor.com, notes that the episode "didn't even take liberties with the books; it completely made up whole new stories" that do not appear in A Storm of Swords, including conversations between Missandei and Grey Worm, Bran's appearance at Craster's keep, and the final White Walker scene. Reviewers from IGN applauded the new material, noting that the scenes at Craster's keep "give Bran something to do" and hint at the nature of the White Walkers. Erik Kain, of Forbes magazine, notes these departures from the books as well, stating that the episode departed as much from the books as any episode thus far in the HBO adaptation of Martin's book series. These deviations, notes Kain, "leave both readers and newcomers to the story of Westeros and its motley band of heroes and villains entirely uncertain as to what's coming next."
