Series 4 (2008)
Episode title: Turn LeftFeaturing: Tenth Doctor
Companions: Donna Noble
First shown: 21st June 2008
Guide: This episode is more like Love and Monsters (series 2) and Blink (series 3) than others because this episode does not feature very much of the Doctor. The episode starts off with Donna having her fortune given to her by a mysterious fortune teller (played by Chipo Chung, the same actress that played Chantho in Utopia (series 3, episode 11)).
The fortune teller takes Donna back to the day when she made a choice to go to H.C.Clemence and work as a temp, meet Lance and the Doctor and everything that happened after wards, and convinces her to change her mind. To turn right. When Donna originally went for the job, she turned left, but the teller makes her turn right, thus preventing her ever meeting the Doctor. At this point, a mysterious bug crawls onto Donna's back.
The Donna in the past changes her mind, and turns right to get a permenant job elsewhere. The next few events then skip years, showing everything that we know happened from previous episodes, but without the Doctor. It starts with Donna going down to the Thames with friends, and seeing the webstar of the Racnoss destroyed. However, the Doctor was drowned underground when he didn't stop flooding the place (as seen in the Runaway Bride episode), and the pressure prevented regeneration. A UNIT soldier is heard saying "The Doctor is dead."
The events then skip through series 3, including the Royal Hope hospital being taken to the Moon, where we find out that a medical student, Martha Jones, died after giving her last oxygen mask to a fellow student, and Sarah Jane Smith also died while trying to stop a MRI machine from blowing up Earth.
We then hear about the Titanic replica (2007 christmas special, Voyage of the Damned) crashing on London, because the Doctor wasn't there to prevent it. This destroys London, leaving many homeless, and many more dead. This continues to happen, including the bit with the Sontarans throughout the episode.
Just before and after each event is seen or heard of, a flash of blue light is seen, and a blonde woman appears each time, to warn Donna to move from London, or to do this or that, but never reveals her name (however, the audience of course recognises her, as Rose Tyler).
Rose tells Donna that by turning right, she changed the future. Made a future without the Doctor, and they needed to fix it. UNIT had taken control of the TARDIS, and using its powers they showed Donna what was on her back. She was told that she needed to go back in time, and make sure she turned left, thus saving the Doctor and the earth.
Donna agrees, and is then told that the mission will kill her. She does not know why or how, but she does know she needs to save the future. She is transported back in time, half a mile away from her past self, with 4 minutes to get there to stop herself turning right. But when she gets to just a few hundred meters away, she realises it's too late. Until a large van drives down the road. Donna Noble throws herself under the van, thus getting run over, but creating a traffic jam to b uild up, to which her past self says that she isn't going to sit in traffic, and turns left.
As the future Donna Nobles lies dying, Rose re-appears and asks her to pass on a message to the Doctor, when she next sees him. She agrees, and the scene changes to the fortune teller running away from Donna, and the Doctor coming in to find out what's been going on.
Donna remembers the message she was asked to deliver, and tells the Doctor, that a blonde woman asked her to tell him "Bad Wolf." The Doctor runs outside to find the words are written everywhere, even on the TARDIS. He goes into the TARDIS and it is glowing red and the cloister bells are ringing. Donna asks whats wrong, to which he replies "The end of the Universe."