much more mysterious reveal from the White Walkers next episode. SEE ALSO: Who are the Children of the Forest on 'Game of Thrones,' and why do they matter? In the trailer, we see our Band of ...

Game of Thrones' canceled Bloodmoon prequel could have provided depth to the White Walkers plot and the Night ... crashing down when Daenerys took a wild turn to become a hateful tyrant.