Actor David Tennant will make his debut as the new Doctor Who on Christmas Day, the BBC has said.
Piper will returns as Rose in the new series
The Christmas special on BBC One is expected to draw a huge audience for his debut as the Time Lord.
Ex-Casanova star Tennant, 34, is replacing Christopher Eccleston as the Doctor and will be joined by Billie Piper who reprises her role as Rose.
The second series of Doctor Who, the first of which won three National TV Awards, begins in the spring.
The first series took awards for most popular drama, best actor award for Eccleston and best actress honours for Piper at the ceremony on 25 October.
Doctor Who was revived in March after a 16-year absence from TV screens and proved to be a ratings success.
Tennant replaced Eccleston in the lead role at the end of the series, appearing briefly at the end of the last episode in June.
He said in August, as he started filming, that he felt "pretty daunted" at playing the sci-fi character.
A third series of Doctor Who has already been confirmed.