S1E6 · A Golden Crown

Complete story — includes the ending

King Robert reappoints Ned as Hand and tasks him with running affairs until Robert returns from hunting. Learning that Ser Gregor Clegane, a Lannister retainer known as "the Mountain", has committed atrocities in Riverrun, Ned sentences him to death and summons Tywin Lannister to a trial. Fearing war with the Lannisters, Ned orders Arya and Sansa return to Winterfell for their safety, and discovers that Joffrey and his two siblings are not Robert's biological children, and were fathered by Jaime Lannister. Bran, while testing his new saddle, is attacked by rogue Wildings, prompting him to be rescued by his brother Robb and Ned's captive ward Theon, who also take the woman Wilding, Osha, as a slave. In the Vale, Tyrion demands a trial by combat. Lysa chooses Ser Vardis Egen as her champion, while sellsword Bronn volunteers as Tyrion's champion. Bronn wins and obtains Tyrion's release. Meanwhile, Viserys grows impatient and angry waiting for Drogo to fulfill his promise, and he threatens to kill Daenerys' unborn child. Drogo kills Viserys by pouring molten gold on his head.