Game of Thrones: The Ghost of Harrenhal

Catelyn is forced to flee when the Baratheon brothers' rivalry comes to a bloody end, and Lord Baelish spots an opportunity to further his own ambitions. Tyrion discovers Joffrey is planning to use a secret weapon to defend his seat of power, and Theon sails for the Stony Shore to prove his worth as a Greyjoy. Arya receives a favour from the man she freed from Harrenhal, and the Night's Watch arrives at the Fist of the First Men to stem the advance of the wildling army