HBO’s medieval saga “Game of Thrones” is known for serving up graphic deaths of its lead characters, but when fan favorite Jon Snow was killed off, avid followers speculated on every theory and sighting that would bring back their heroic soldier. It looks like they prevailed. “Game of Thrones” tweeted a teaser poster on Monday with a partial shot of Jon Snow’s rugged, bloodstained face and trademark hair, with the simple caption “APRIL. #GoTSeason6.” The […]