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) the head to locate the controlling signal. With the head connected, the TARDIS takes them to the London Eye. The Doctor explains to Rose that the fake Mickey was an Auton, controlled by a signal from the Nestene Consciousness. He has a vial of anti-plastic that can be used to destroy the Nestene if necessary. Realising that the transmitter is the London Eye itself, Rose and the Doctor descend underneath it to stop the Nestene Consciousness. They find Mickey, tied up but alive, and the Doctor speaks to the Nestene Consciousness. He tries to negotiate with it, but the Consciousness