Doctor Who (2013 specials) Doctor", saw the departure of Smith from the series and the introduction of Peter Capaldi as the Twelfth Doctor. "The Day of the Doctor" features the return of the Zygons for the first time since "Terror of the Zygons" in 1975. "The Time of the Doctor" draws together a number of plot threads that have run through the series since the Eleventh Doctor's first episode in 2010. <onlyinclude></onlyinclude> In "The Day of the Doctor", Smith and Coleman star alongside David Tennant and Billie Piper; Tennant reprised his role as the Tenth Doctor, while Piper, although credited as playing Rose Tyler,
Rose (Doctor Who episode) Muggsy Smith became Mickey Smith. Davies had trouble coming up with how Mickey was supposed to be captured by the Nestene while waiting for Rose in the car, and finally realised he could be lured by a plastic wheelie bin. He commented that such instances of the ordinary being made scary made "Doctor Who" unique. Davies had to take out "oblique" references to the Autons being like terrorists, as the Eye was once a target of a terrorist attack. The entrance of the Doctor was something much debated; Tranter and other members of the production team wanted it to be