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
The Runaway Bride (Doctor Who) the Earth by gradually and secretly poisoning Donna with an alien particle the Racnoss use as an energy source. The Tenth Doctor, still saddened by his separation from companion Rose Tyler, is shocked when Donna Noble, in a wedding dress, appears within the TARDIS while in flight, a near impossibility. She angrily demands to be returned to her wedding as the Doctor performs several tests on her before materialising the TARDIS on Earth, though across the city from the ceremony. Donna leaves in a huff and takes a cab, but the Doctor observes a robotic Santa Claus is driving the