HBO Announces ‘Game Of Thrones’ Feature-Length Documentary The end is near. HBO's two-hour documentary
will air on May 26, one week after the 'Game of Thrones' series finale. 'Game of Thrones: The Last Watch' will take viewers behind the scenes of the final season. HBO, via statement The documentary will be directed by
British filmmaker Jeanie Finlay. David Benioff, D.B. Weiss and Bernadette Caulfield will be the executive producers. The eighth and final season of 'Game Of Thrones' premieres on Sunday, April 14.