HBO has started to move forward on itsGame of Thronesprequel.

The web connection has begun casting for its eagerly anticipated seriesHouse of the Dragon,sources confirm to EW.

The project is based onGeorge R.R.

Game of Thrones Season 8, Episode 4

Courtesy of HBO

Martin’sFire & Blood, a history of House Targaryen set 300 years before the events inGoT.

Sapochnik will also direct the pilot and additional episodes.

HBO has committed to 10 episodes of the series.

What would make sense is if the first season (or two) led up to those events.

From this, it’s tempting to speculate on casting.