This is the official interview released by the BBC with Doctor Who showrunner Steven Moffat.

Steven Moffat, Lead Writer and Executive Producer, gives an insight in to what to expect from the ninth series of [the latest run of] Doctor Who, returning to UK’s BBC One and BBC America on Saturday September 19th 2015.

Masterpiece Sherlock - Steven Moffat
Doctor Who show runner and Sherlock Co-writer and executive producer Steven Moffat at the Television Critics Association Summer Press Tour in Los Angeles, CA on Saturday, August 1, 2015 ©2015 PBS, photo by Rahoul Ghose

Doctor Who is back, how has the dynamic of the series changed since series 8?

Peter Capaldi returns with his second series as the Doctor – it’s the glory years of the Doctor and Clara. They’ve been through the angst, the Doctor has been through his fear of not being a good man, and Clara has been through her fear that this might not be the Doctor.

They’re on equal footing with a new dynamic between them and are relishing the Universe. They’re linking hands and running towards a brand new world of epic adventure on a cinematic scale. They are clearly heroes and loving every minute!

Doctor Who Series 9 - Michelle Gomez
Doctor Who Series 9 – Missy aka The Master (Michelle Gomez) ©2015 BBC Worldwide

How is the series different from last year?

It’s a big, mad and exciting series. You’ll be grinning a lot more and there’s more comedy mixed in with some of the darkest stuff we’ve done – the Doctor’s first big entrance sets the tone.

Why did you decide to reintroduce two-parters?

We’re doing bigger stories and two-parters allow you all those massive cliff hangers. Forty five minutes has served us incredibly well, but it’s time to change it up a bit, change the rhythm.

It’s not just about being longer, sometimes it’s about going deeper. And you won’t always be quite sure whether you’re watching a two-parter or not – how much longer the jeopardy will last. We’re aiming to be unpredictable.

Tell us about the guest cast

Doctor Who, Season 9 - Maisie Williams
Doctor Who, Season 9 – Maisie Williams in the TARDiS ©2015 BBC Worldwide

We have a vast array of guest cast this year that means we can build on the depth of stories and develop intrigue and backstories even further.

  • We have the magnificent, insane and comedic Missy returning
  • Young outstanding Maisie Williams taking up a new role, as her character challenges the Doctor in unexpected ways
  • And of course Osgood is brought back from the dead. The Doctor might be in for a surprise with her, this time he might not be able to trust his number one fan
Doctor Who, Season 9 -Ingrid Ingrid Oliver
Doctor Who, Season 9 – Doctor Who UNIT scientist Osgood, played by Ingrid Oliver ©2015 BBC Worldwide

Did you have any challenges writing for the series?

We always like a new challenge on the show:

  • Bringing adventures set on dangerous alien planets
  • Urban thrillers
  • Underwater ghost stories
  • Journeys that take us from Vikings to the end of time itself

We’re pushing the boundaries once again with the most experimental episode Doctor Who has ever made. I’ve written a one-hander for the Doctor, I can’t tell you too much about this, but it’s certainly unique and a big first for the show!

Look out for the interview with Steven Moffat he gave while we where at the TCAs.

Doctor Who 901 (2000s) “The Magician’s Apprentice” Trailer