According to Variety, little has been revealed about Watts’ character, although show creators have let slip that she will play “a charismatic socialite hiding a dark secret.” Hmm – perhaps she’s the legendary mermaid who married the Grey king of the Iron Islands, eh?

Whatever her role, it’s safe to say that the show will not be a feel-good one (go figure). Why? Well, while the Age of Heroes is steeped in beauty, romance, creativity and peace (it begins with the signing of the legendary pact on the Isle of Faces), it was also a time of the darkest and blackest of winters – otherwise known as the Long Night, which heralded the arrival of the Others.

To quote Samwell Tarly: “The oldest histories we have were written after the Andals came to Westeros. The First Menonly left us runes on rocks, so everything we know about the Age of Heroes and the Dawn Age and the Long Night comes from accounts set down by septons thousands of years later. There are archmaesters at the Citadel who question all of it. Those old histories are full of kings who reigned for a hundred years, and knights riding around a thousand years before there were knights.”

Game of Thrones prequel: Only one major GOT house will feature, and it’s not the Targaryens