Williams appears as Arya Stark in the seventh episode of the fourth season of Game of Thrones, Mockingbird. Rory McCann plays Sandor Clegane, a kingsguard deserter known as the Hound who is holding Arya captive. They are confronted by two men, Biter and Rorge, who had been prisoners of the Night’s Watch until they escaped during a battle with Lannister forces. The Hound kills Biter and questions Rorge, who reveals that a bounty has been placed on the Hound. Recognizing Rorge as the man who threatened to rape her while she was traveling with the Night’s Watch, Arya stabs him through the heart.