War arrived at the gates of King's Landing last night, as Game of Thrones delivered an episode both action-packed and heartfelt.

And the ramifications - Tyrion's fate, Sansa's future, the presence of Tywin - will lead into next Sunday's season two finale, an episode titled "Valar Morghulis." What can viewers expect from the concluding hour?

• Luwin offers advice to Theon as he prepares his men for action.
• Arya receives a gift from Jaqen.
• Jon Snow proves his value to Qhorin.
• Dany ends up in unfamiliar surroundings.
• Brienne silences Jaime.

Watch the official HBO trailer now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.