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  ===In the Riverlands===
  The Stark army reaches the Twins, a bridge stronghold controlled by Walder Frey, who agrees to allow the army to cross the river and to commit his troops in return for Robb and Arya Stark marrying two of his children.
  Tyrion Lannister suspects his father Tywin, who decides Tyrion and his barbarians will fight in the vanguard, wants him killed. As Tyrion, Bronn, and the prostitute Shae swap stories, Tyrion reveals he was married to a woman his father revealed was a prostitute, and made Tyrion watch as his guardsmen raped her.
  As a Stark force approaches, Tyrion is trampled in the rush and regains consciousness to find the battle over. Tywin discovers the Stark host was only 2,000 men, not the 20,000 he was led to expect.
  Robb, having divided his forces, defeats Jaime Lannister's army with his remaining 18,000 men and captures Jaime.