Doctor Who (series 4) Jones from the previous series. John Barrowman, Elisabeth Sladen, Noel Clarke and Camille Coduri also returned to appear in the series finale, as well Billie Piper, who appeared as Rose Tyler in the three final episodes of the series. The series started production on 8 August 2007 and concluded on 29 March 2008. A short Children in Need special titled "Time Crash" was also produced and before "Voyage of the Damned", as well as a mini-episode entitled "Music of the Spheres", which was premiered at the "Doctor Who" Prom after the fourth series finale in July 2008. The fourth series
Time War (Doctor Who) to Jack Harkness in "Utopia" that his resurrection by Rose was part of the final act of the War. Following what was for all intents and purposes the removal of the Time Lords, the Doctor believed himself to be the last of his race. The removal of the Time Lords also had a profound impact on time travel. In the 2006 episode "Rise of the Cybermen" when the Tenth Doctor, Rose Tyler and Mickey Smith are trapped in an alternative reality, the Doctor explains that, when the Time Lords were around, travel between parallel universes was less difficult but, with