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
Harry Sullivan (Doctor Who) but he is apparently on some secret assignment and neither has seen him for a long time. Will is eventually revealed to be a sleeper agent of a religious cult targeting Sarah Jane, and dies during the course of the series. Harry appears in the Titan "Doctor Who" Ninth Doctor comic storyline "Official Secrets", set in the 1970s, where he briefly takes command of UNIT during the Brigadier's absence while investigating the mysterious appearance of large monsters, meeting the Ninth Doctor, Rose Tyler and Captain Jack Harkness during the crisis. A vision of Harry is seen along with every other