Series 3 Episode 13: Last of the Time Lords

Summary:
The Master rules the earth and has the power to decide who lives and who dies. The Doctor, Jack and Martha's family are his prisoners and he likes to torture him because they won't tell him where Martha is. Meanwhile Martha has travelled the world to find a weapon to fight the Master and now she has returned to England. There she meets with Professor Docherty to find out what's inside the metal shell of the aliens. Soon they see, that the humans from the future who wanted to find Utopia are inside and that the Master has made them into what they are now. The Professor betrays Martha and soon she is captured by the Master as well. Now the Master thinks he has won the war but the Doctor reveals to him that Martha wasn't travelling the world to find a weapon but to tell the story of the Doctor. Is that the way to save the world?

The year that never was is a great idea in my opinion, although there have been some rewrites of time in the Doctor Who universe before and after this episode. It's a brilliant final part for this three-parter and a great series finale for series 3. Martha is really the saver of the world because without her the Doctor couldn't have won the war against the Master. I think it's sad to see that she leaves him now but she has to stay with her family after everything that had happened. Martha is one of the companions who leave because she wants to and not because she is left behind or killed or something like this. The Doctor had finally found another Time Lord who is gone now too. This is definitely a hard episode for the Doctor because he is left alone by all of his companions. I love the moment when they reveal that jack is the face of Boe though. Really brilliant.