Contains spoilers for this episode and earlier episodes.
Tyrion arrives in King's Landing to serve as Hand in Tywin's place and confronts Cersei over the loss of the Stark hostages. Sansa saves the drunken knight Dontos from Joffrey by suggesting he become a fool instead. At Dragonstone, Stannis announces that Cersei's children were fathered by Jaime and claims the throne. Maester Cressen tries to poison Melisandre, but she survives the shared drink while he collapses and dies.
Robb sends peace terms to the capital demanding his sisters, his father's remains and northern independence. He sends Theon to seek ships from Balon Greyjoy and asks Catelyn to approach Renly about an alliance. Bran hears petitions at Winterfell with Luwin's help. Beyond the Wall, Craster tells the Watch that Mance Rayder is gathering the wildlings. Daenerys struggles across the Red Waste and sends riders in three directions to find shelter for her people.
Cersei argues with Joffrey about finding Arya, whose return might help recover Jaime. When Joffrey questions the rumours about his parentage and insults her, she slaps him and receives a threat in return. The City Watch begins killing Robert's illegitimate children, including a baby at Littlefinger's brothel. Questioning Gendry's former master reveals that the apprentice has left for the Wall. Gendry is already travelling north in Yoren's party, beside the disguised Arya.