Please change name to: The Finishing Touch please moderators. Airdate Doctor(s) Companion(s) Starring Writer Series "I AM A GOOD MAN!" Peter Capaldi's final words as The DoctorThe 12th Sunset was the final episode of the Tenth Series of Doctor Who and final episode with Peter Capaldi as The Doctor and Steven Moffat as head writer. They are replaced by Benedict Cumberbatch and Chris Chibnall respectively.