Milly Alcock & Emily Carey Join HBO’s GOT Prequel House of the Dragon

(Photo by Don Arnold/WireImage via Getty Images & Jeff Spicer/Getty Images for BFI)

The official House of the Dragon Twitter account has announced that Milly Alcock (Upright, Reckoning) and Emily Carey (Wonder Woman, Tomb Raider) have joined HBO’s Game of Thrones prequel series. Alcock will play the young Princess Rhaenyra Targaryen, while Carey portrays young Alicent Hightower.

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Based on George R.R. Martin’s book Fire & Blood, the series will tell the story of House Targaryen (a.k.a. the House that gave us the Mother of Dragons herself, Daenerys Targaryen) and take place 300 years before the events of Game of Thrones.

Pick up your copy of Fire & Blood: 300 Years Before A Game of Thrones here!

Young Princess Rhaenyra Targaryen (Alcock) is the king’s first-born child, of pure Valyrian blood, and she is a dragonrider. Many would say that Rhaenyra was born with everything…but she was not born a man. Young Alicent Hightower (Carey) is the daughter of Otto Hightower (Rhys Ifans), the Hand of the King, and the most comely woman in the Seven Kingdoms. Alicent was raised in the Red Keep, close to the king and his innermost circle; she possesses both a courtly grace and a keen political acumen.

The series also stars Paddy Considine (The Third Day, The Outsider) as King Viserys Targaryen, Olivia Cooke (Ready Player One) as Alicent Hightower, Emma D’Arcy (Truth Seekers) as Princess Rhaenyra Targaryen, Matt Smith (The Crown, Doctor Who) as Prince Daemon Targaryen, Steve Toussaint (It’s a Sin, Doctor Who) as Lord Corlys Velaryon aka “The Sea Snake,” Eve Best (Nurse Jackie, The King’s Speech) as Princess Rhaenys Velaryon, Rhys Ifans (Notting Hill, The Amazing Spider-Man) as Otto Hightower, Sonoya Mizuno (Ex Machina, Crazy Rich Asians) as Mysaria, and Fabien Frankel (The Serpent) as Ser Criston Cole.

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House of the Dragon is created by George R.R. Martin and Ryan Condal (Colony), with frequent Game of Thrones director Miguel Sapochnik set to helm the pilot and additional episodes of the series. Sapochnik and Condal are also set as co-showrunners of the prequel. Clare Kilner (The Alienist: Angel of Darkness) and Geeta V. Patel (The Witcher) will also direct the series. Executive producers are Martin, Sapochnik, Condal, Vince Gerardis, Sara Lee Hess, and Ron Schmidt. Greg Yaitanes (Banshee, House) is director and co-executive producer. Game of Thrones and Westworld composer Ramin Djawadi will score the series.

The prequel series is currently eyeing a 2022 debut.