Flashbacks are coming. HBO confirms to Mashable season 5 of Game of Thrones will include a flashback to storylines and background provided in George R.R. Martin’s A Song of Ice and Fire. Show producers David Benioff and D.B. Weiss broke the news this week during a Q&A with film students at an event in Spain, where the show is currently shooting. The producers said, “By making the first season, we set a rule: No prophecies, dreams or flashbacks. We failed the first two and this season, the third.