The latest buzz is that HBO is nearing a pilot commitment for a prequel series based on the Game of Thrones companion book Fire & Blood. The book tells stories of previous Targaryen kings, like Aegon the Conqueror, the first ruler of Westeros, and Aegon the Dragonbane, all of whom are ancestors of Daenerys Targaryen (Emilia Clarke) and Jon Snow (Kit Harington), who appear in the recently finished mega-hit series. The prospective pilot hails from Martin and Colony co-creator and executive producer Ryan Condal, and would be set 300 years before the events of the original series, exploring the beginning of the end for House Targaryen.