Keeley Hawes cast in Doctor Who

The BBC have announced that actress Keeley Hawes is to join the cast of Doctor Who playing a villain.

Hawes will play Ms Delphox, a powerful out-of-this-world character with a dark secret. Travelling across space and time, the Twelfth Doctor (Peter Capaldi) and his companion, Clara Oswald (Jenna Coleman), will come face to face with the mysterious Ms Delphox, when they arrive on a strange and puzzling planet.

The character will appear in the fifth episode of the series, written by Steve Thompson and directed by Douglas Mackinnon, which is currently being filmed in south Wales.

Hawes is best known for roles in The Last September, an adaptation of Elizabeth Bowen's 1929 novel, as well as playing Zoe Reynolds in Spooks, Alex Drake in Ashes to Ashes and Lady Agnes in Upstairs, Downstairs. She is currently playing Detective Inspector Lindsay Denton on the second series of the BBC Two drama Line of Duty. She was the voice of Lara Croft in several Tomb Raider video games.

Commenting on her role, Hawes said: Lead writer and executive producer Steven Moffat added: