The anticipated series premieres Aug. 21 on HBO.
The ‘Game of Thrones’ prequel series will debut Sunday, Aug. 21.
The author of the 'Game of Thrones' franchise reveals he's seen the first episode, which is slated to debut in 2022.
'Dreams didn’t make us kings. Dragons did.'
Matt Smith, Olivia Cooke, Steve Toussaint and more star in the series set 300 years before the events of 'Game of Thrones.'