17. The Hound and Arya Team Up
Season 4, Episode 1: "Two Swords"
Technically, the episode title refers to the twin blades that Tywin Lannister created from the melted-down remnants of Ned Stark's Valyrian steal greatsword. But the pair of weapons that really stole the spotlight were the ones wielded by Sandor "The Hound" Clegane – the former attack dog of House Lannister, now gone rogue — and wild-child survivor Arya Stark. Equal parts hostage, frienemy and protégé, she wound up helping him take down an inn full of Lannister goons, after which the two rode off into the sunset side by side. Never before had the viewing public been so thrilled to watch a little girl turn into a vicious killer.