"Doomsday" is the thirteenth and final episode in the second series of the British science fiction television series Doctor Who. It was first broadcast on 8 July 2006 and is the conclusion of a two-part story; the first part, "Army of Ghosts", was broadcast on 1 July 2006. The two-part story features the Daleks, presumed extinct after the events of the 2005 series' finale; and the Cybermen, who appeared in "Rise of the Cybermen" and "The Age of Steel". Both species unexpectedly arrived on Earth at the conclusion of "Army of Ghosts". The concept of the Daleks and the Cybermen both appearing on-screen was first proposed in 1967, but was vetoed by Terry Nation, the creator of the Daleks. The episode is the first conflict between the two species in Doctor Who's 45-year history, and features Billie Piper's last appearance in the lead companion role as Rose Tyler and the final regular appearances of Noel Clarke as Rose's ex-boyfriend and previous companion Mickey Smith, and Camille Coduri and Shaun Dingwall as Rose's parents Jackie and Pete Tyler.