HBO's Harry Potter actress Miranda Richardson to the pilot cast. Based on George R.R. Martin's sprawling fantasy book series A Song of Ice and Fire, Game of Thrones tells the tale of the fictional Seven Kingdoms where various players large and small engage in epic battle in hopes of one day sitting on the Iron Throne.

First debuting on HBO in 2011, Game of Thrones quickly established itself as one of TV's most talked about series, and over the years it has grown into a genuine phenomenon. Now, the epic show is set to air its last six episodes, which among other things will depict the Naomi Watts and Josh Whitehouse have been named to head up the prequel cast, with the pilot set to be directed by S.J. Clarkson.

Related: Game of Thrones Mysteries The Long Night Can Answer

With Fantastic Beasts: The Crimes of Grindelwald), Sheila Atim (Harlots), Ivanno Jeremiah (Black Mirror), Georgie Henley (The Chronicles of Narnia), Alex Sharp (To the Bone) and Toby Regbo (Reign).

Richardson is of course no stranger to big-budget fantasy, Good Omens.

With the addition of the ever-winning Richardson, The Long Night is indeed putting together a solid ensemble to help bring to life the next chapter in the saga of Game of Thrones and its epic fantasy world. It remains to be seen if the new series will kill off its characters with as much abandon as the original.

MORE: Game of Thrones Theory: Naomi Watts Is Playing The FIRST Lannister

Source: TVLine