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
School Reunion (Doctor Who) include free lunches with special chips. The Tenth Doctor, under the alias "John Smith", is undercover as a science teacher in the school, and his companion, Rose Tyler, is working undercover in the school's cafeteria. The Doctor is surprised by the good behaviour of the students and intrigued by the uncommon intelligence of one of his physics students. Both the Doctor and Rose relate the mysterious events around the school to the chips: Rose observes that the chip oil has an adverse effect on the other kitchen staff, who must use hazmat suits to handle the oil, while the Doctor