(from HBO's press release, January 2014) GAME OF THRONES kicks off its fourth season SUNDAY, APRIL 6 (9:00-10:00 p.m. ET/PT). Based on the popular book series "A Song of Ice and Fire," by George R.R. Martin, this hit Emmy(R)-winning fantasy series chronicles an epic struggle for power in a vast and violent fantasy kingdom. Members of the ensemble cast include Emmy(R) and Golden Globe winner Peter Dinklage, Lena Headey, Emilia Clarke, Nikolaj Coster-Waldau, Kit Harington, Natalie Dormer, Maisie Williams and Sophie Turner. Executive producers, David Benioff, D.B. Weiss, Carolyn Strauss, Frank Doelger, Bernadette Caulfield; co-executive producers, Guymon Casady, Vince Gerardis, George R.R. Martin. The first official trailer for season four will air on HBO this Sunday, Jan. 12, immediately before the debut of "True Detective" at 9:00 p.m.