The BBC announced that actor, comedian and award-winning writer Reece Shearsmith will guest star alongside Peter Capaldi (Doctor) and Jenna Coleman (Clara Oswald) in a special episode in the upcoming season of ‘Doctor Who.’ 

Shearsmith previously played Patrick Troughton in a docu-drama about the conception and making of Doctor Who, in ‘An Adventure in Space and Time,’ and returns to Cardiff for a part in an adventure written by Mark Gatiss, directed by Justin Molotnikov and produced by Nikki Wilson.

‘I am absolutely thrilled to be filming ‘Doctor Who’ as Mark Gatiss has written a fantastic role for me in a very scary episode. It has been so exciting to be part of a very singular episode – which, I can say with authority will be unlike any previous episode of Doctor Who. It’s a joy to play a part in the show – certainly a badge of honour.’ said Shearsmith on his casting.

Mark Gatiss, writer of the episode, added: ‘I’m delighted to be writing again for Peter and Jenna’s brilliant TARDIS team and very excited about this particular story. It’s been brewing in the dark recesses of my mind for a while now! I’m also chuffed to bits to finally welcome my old friend Reece Shearsmith onto the show. He’s been badgering me for ten years!’

Shearsmith will be joined by Elaine Tan (Eastenders, Entourage), Neet Mohan (All in Good Time, Desert Dancer), Bethany Black (Cucumber, Banana) and Paul Courtenay Hyu (Dalziel and Pascoe, Coronation Street).

‘Doctor Who’ Series 9 returns September 19th, 2015 on BBC America.