Game of Thrones - Season 2, Episode 10 Synopsis
 

Episode 2-10
Title: "Valar Morghulis"
Directed by Alan Taylor
Written by David Benioff & D. B. Weiss
Original Air Date -- June 3, 2012

The aftermath of the Battle of the Blackwater sees Joffrey set Sansa aside in favor of marrying Margaery Tyrell while Tyrion fears for his and Shae's safety now that his father has replaced him as Hand of the King. Melisandre gives a defeated Stannis a new hope. Brienne runs into trouble while escorting Jaime to King's Landing. Catelyn tries to convince Robb that his romance with Talisa is dangerous, but he defies her and the two are married. In Qarth, Daenerys ventures into the House of the Undying and successfully retrieves her dragons. She then seals the traitor Xaro Xhoan Daxos inside his own vault and claims his riches for herself to buy a ship. In Winterfell, Theon is betrayed by his own men in the face of an inevitable siege while Winterfell is put to the torch. Osha and Hodor sneak brothers Bran and Rickon away from the smoldering ruins and take them North toward the Wall. Arya, having escaped Harrenhal with Hot Pie and Gendry, receives the gift of a valuable coin from Jaqen. North of the Wall, Qhorin Halfhand forces Jon to kill him to prove his loyalty to the Wildlings and an army of White Walkers surrounds the Fist of the First Men.

Source: http://en.wikipedia.org/wiki/Game_of_Thrones_(season_2)