*whispers* there's no such thing as a faithful retelling of the legend of King Arthur because there are a lot of legends of King Arthur, it is basically one huge pile of fanfic and people keep adding to the pile
Me, every time a new version of the King Arthur story is marketed as "the true story":
I have to get back to writing the third book in my authoritative trilogy on stuff entirely unrelated to King Arthur, please buy my books and hit me up if you want to talk about the Knights of Justice and their excellent football team led by Arthur King http://candleinsunshine.com/books/chilling-effect/