Season 2 of Game of Thrones will be based on George R. R. Martin's novel A Clash of Kings.
HBO unleashed a new Season 2 "Behind the Scenes" Production video on November 20th, featuring Executive Producers David Benioff and DB Weiss, along with glimpses of Jon Snow and Sam beyond the wall, Cersei, Tyrion and Sansa, Joffrey with a crossbow, Arya on her way back to the wall with Yoren, Theon talking to a man with long white hair (Damphair perhaps?) and Daenerys and Jorah walking about.
We also get first glimpses of Stannis Baratheon, Melisandre, Davos Seaworth and Margaery Tyrell.
HBO just released an all new BTS video about the stunt work and fight coordinating for Season 2. You can see The Hound suit up for the Battle of Blackwater and the first ever glimpses (from behind) of a tall, blonde Brienne of Tarth!
Be sure to read IGN's [[Who's Who in Season 2] here to find out the actors and actresses who've been cast as Stannis, Davos, Melisande, Brienne, Craster and more...