The Time of the Doctor
Both episodes starred Matt Smith as the Eleventh Doctor and Jenna Coleman as Clara Oswald. The 50th-anniversary special, "The Day of the Doctor" saw the guest returns of former series leads David Tennant and Billie Piper, as well as introducing John Hurt as the War Doctor. "The Time of the Doctor" saw the departure of Smith from the series and the introduction of Peter Capaldi as the Twelfth Doctor.