Lena Headey will play the duplicitous Cersei Lannister, twin sister of Jaime Lannister, played by Nikolaj Coster-Waldau ("Virtuality"), with whom she indulges an incestuous relationship that spans decades. Along the way she marries the hard-drinking King Robert Baratheon, played by Mark Addy (“Still Standing”). Also cast in the project are Sean Bean (“Crusoe”) as Ned Stark, Kit Harrington as Jon Snow, Jack Gleeson (“Batman Begins”) as Joffrey Baratheon, Harry Lloyd (“Robin Hood”) as Viserys Targaryen, Iain Glen ("Resident Evil: Extinction") as Ser Jorah Mormont, Tamzin Merchant (2005's "Pride and Prejudice") as Daenerys, Richard Madden (the BBC's "Hope Springs") as Robb Stark, Sophie Turner as Sansa Stark, Maisie Williams as Arya Stark and Alfie Allen ("The Other Boleyn Girl") as Theon.
A Game Of Thrones premiers Sunday April 17th.