The Drowned God, the Lord of Light, the Seven. There are so many gods and religions in Westeros, it's hard to keep them all straight!
Fortunately, the man who thought it all up, George R.R. Martin. is here to help you. In this fascinating Game of Thronesfeaturette, Martin takes us through a history of the religions in Westeros, and explains how the characters on the show relate to the different beliefs.