Williams appears as Arya Stark in the second episode of the fourth season of Game of Thrones, Dark Wings, Dark Words. Her companions Gendry and Hot Pie are played by Joe Dempsie and Ben Hawkey. After escaping from Lannister forces at Harrenhal castle, Arya, Gendry and Hot Pie are taken in by the secret society known as the Brotherhood Without Banners and given food and drink at an inn. Members of the Brotherhood bring the captive kingsguard Sandor Clegane, played by Rory McCann. Clegane recognizes Arya and notifies their captors that she is a daughter of the Stark noble family.