Good news, Game of Thrones fans! A new prequel series, A Knight of Seven Kingdoms, is finally on the way! Here's what you need to know.

HBO began production on "A Knight of the Seven Kingdoms" earlier this ... the Targaryen line still holds the Iron Throne, and the memory of the last dragon has not yet passed from living memory ...

naïve but courageous knight, Ser Duncan the Tall, and his diminutive squire, Egg. Set in an age when the Targaryen line still holds the Iron Throne, and the memory of the last dragon has not yet ...