Warner Bro. Discovery reveals the release window for the upcoming Game of Thrones spinoff series, A Knight of the Seven Kingdoms. Set a century before a deserter was beheaded by Ned Stark for running south, the prequel series follows two unlikely heroes as they travel around Westeros. Adapted from George R.R. Martin’s novella The Hedge Knight, the series stars Peter Claffey as Ser Duncan the Tall and Dexter Sol Ansell as Prince Aegon “Egg” Targaryen.