The trailer has arrived for Lena Headey's newest show Beacon 23. Headey, who is best known for playing Cersei Lannister on the hit HBO fantasy drama Game of Thrones, will be playing Aster Calyx, a character who is awakened after her ship brings her to a beacon at the edge of the known universe. The show, which is based on the Hugh Howey short stories of the same name and premieres on MGM+ on November 12, also stars Stephan James, Marnie McPhail, Daniel Malik, and Cyrus Faird.