Game Of Thrones Game Of Thrones

Has winter come yet?

Check out this behind-the-scenes look at HBO's highly anticipated second season of Game of Thrones, airing in spring 2012. The season will mainly focus on the events in George R.R. Martin's A Clash of Kings, the second book in the best-selling A Song of Ice and Fire series on which Thrones is based.

Downton Abbey's Rose Leslie cast in Game of Thrones

"One of the great challenges of the second season is that the world just expanded enormously," says executive producer and writer David Benioff. "Not only do we introduce a great number of new characters, but we're journeying to all new locations."

Among those new characters you can actually spot in the video is The Tudors' Natalie Dormer, who plays the lovely Margaery Tyrell, who's been hanging out with an antler-crowned Renly (Gethin Anthony) lately.

Among the Starks, we see Sansa (Sophie Turner), Catelyn (Michelle Fairley), Bran (Isaac Hempstead-Wright) and Arya (Maisie Williams), whom we last saw escaping King's Landing disguised as a boy. We also spot Tyrion (Peter Dinklage) several times, once with Sansa and another time with King Joffrey (Jack Gleeson).

See how many other familiar faces you can spot:

Game of Thrones returns for Season 2 in the spring on HBO.

What do you think of your first peek at Season 2? Who's the character you're most looking forward to seeing again?