Keeley Hawes (Line Of Duty) is going to guest star in an episode of the new series of Doctor Who.

The Ashes to Ashes star will play Ms Delphox, “a powerful out-of-this-world character with a dark secret”.

The BBC revealed today that the Twelfth Doctor (Peter Capaldi) and Clara Oswald (Jenna Coleman) will come face to face with the mysterious Ms Delphox when they arrive on a strange and puzzling planet.

The episode is written by Steve Thompson (Sherlock) and directed by Line Of Duty‘s Douglas Mackinnon.

Hawes commented: “I am delighted to join Doctor Who and to be working with this incredible team. Ms Delphox is a great character and someone I’ve had a lot of fun playing.”

Showrunner Steven Moffat added: “Anyone watching Jed Mercurio’s amazing Line Of Duty will know that Keeley Hawes is having one hell of year. And now it’s about to get even better as she achieves the greatest villainy yet attempted on Doctor Who: she plays a banker.”

The second series of Line Of Duty concludes next week on BBC Two.

Doctor Who Series 8 is currently filming in Cardiff and is expected to begin airing on BBC One in August.

> Here’s everything we know about Series 8 so far.

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