<P> In 2008, Headey starred in the horror film The Broken . The film was directed by Academy Award - nominated Sean Ellis . The film was about "a woman who suspects she's being followed around London by a murderous doppelganger". The Broken was screened at the midnight portion of the 2008 Sundance Film Festival, and generally got average reviews . Some critics praised Headey's performance, including Kim Koynar of Cinematical who wrote that Headey "largely carries the film, and does so quite ably". </P> <P> Headey was cast in the lead part in another horror film titled Laid to Rest, which was first screened in 2008 . However, the film went straight to video on 21 April 2009 and earned mixed reviews . Critic Mark H. Harris for About.com stated that the film "has a great look and boasts an impressive cast," referring to both Headey and co-star Thomas Dekker . Headey had a part in a short film called The Devil's Wedding . She provided her voice for an episode of the Cartoon Network TV series The Super Hero Squad Show playing Black Widow and Mystique . </P> <P> Since its premiere in April 2011, Headey has portrayed queen regent Cersei Lannister on the HBO series Game of Thrones, based on George R.R. Martin's A Song of Ice and Fire series of novels . Headey was cast in the role after her friend and eventual co-star, Peter Dinklage, suggested her casting to producers . Her performance as the ruthless queen has received critical acclaim . In 2011, she was nominated for a Scream Award in the category of Best Fantasy Actress for the role . Headey was nominated for an Emmy Award for Outstanding Supporting Actress in a Drama Series for portraying Cersei in 2014, 2015 and 2016 . </P> <P> Headey made a guest appearance in the television show White Collar in the episode "Taking Account" in which she played the role of Sally . In 2012, she appeared in the 3D action science - fiction film Dredd alongside Karl Urban and Olivia Thirlby . Her character is Madeline Madrigal (Ma - Ma), the leader of a drug dealing gang, and the project's primary villain . Dredd is a film adaptation of 2000 AD character Judge Dredd . The film was directed by Pete Travis with a script by Alex Garland . In May and June 2012, Lena filmed the fantasy adventure film The Adventurer: The Curse of the Midas Box throughout South West England, playing the role of Monica . The film was released in 2014 . </P>

Who plays the queen on game of thrones