Turn Left (Doctor Who) Turn Left (Doctor Who) "Turn Left" is the eleventh episode of the fourth series of British science fiction television series "Doctor Who". It was written by showrunner Russell T Davies and broadcast on BBC One on 21 June 2008. David Tennant only makes a small contribution to this "Doctor-lite" episode as the Tenth Doctor. The story instead focuses on the Doctor's companion, Donna Noble (Catherine Tate) and her encounters with former companion Rose Tyler (Billie Piper). The episode's narrative focuses on an alternative history where the Doctor dies during the events of the 2006 Christmas special "The Runaway Bride". The
Rose (Doctor Who episode) and Noel Clarke were also cast to play Rose's mother and boyfriend respectively; Davies wanted to include these characters to "make her real" and to "give her a life". Rose's family is also working-class, which had rarely been seen in companions on the show prior to "Rose". The episode name had gradually been shortened; in Davies's pitch it had been called "Rose meets the Doctor, and the journey begins", on his contract "Rose Meets The Doctor", and finally shortened to "Rose". Also changed from Davies's original pitch were the names of the supporting characters: Judy Tyler became Jackie Tyler, and