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
Doctor Who spin-offs was produced by animation company Nelvana in the 1980s, but the series was not produced. CBBC originally expressed an interest in a "Young Doctor Who" series, chronicling the childhood of the Doctor. Russell T Davies vetoed this concept, saying "somehow, the idea of a fourteen-year-old Doctor, on Gallifrey inventing sonic screwdrivers, takes away from the mystery and intrigue of who he is and where he came from,". He instead suggested "The Sarah Jane Adventures" (see above). A further spin-off of "Doctor Who"—"Rose Tyler: Earth Defence", a 90-minute special that could possibly become an annual event—was cancelled by Davies at a