Cue the “Winter is Coming” headlines: HBO’s hit high-fantasy drama Game of Thrones is back this Sunday, and speculation about the infamously unpredictable show has reached a fever pitch. Based on George R.R. Martin’s A Song of Ice and Fire book series, the show’s massive cast, byzantine plot, and out-of-nowhere plot twists leave plenty of room for speculation. To help readers find their way through the rumor mill, we’ve compiled everything we know about Season 3, from chronology to guest stars to its soundtrack. Read on for a sneak peek at what lies ahead, and diehard fans be warned: there are a few minor spoilers...."