The Doctor’s Daughter takes place immediately following the end scene of The Poison Sky with Martha Jones and Donna in the TARDIS, as seen here:
And so it begins…
There are a lot of reasons why I am particular to The Doctor’s Daughter as an episode.
First, there is a lot of Martha Jones being involed on the either side of the war taking place on the planet Messaline.
Second, Donna really shines in this epsoide by being able to piece together that the numbers are dates counting out because the city was built outward from the spaceship. So they marked when each section was completed.
Third, I thought Jenny was just fantastic particularly in how she interacts with both the Doctor and Donna. Unfortunately, she dies at the end, only to return and take off in a spaceship for adventures.
Finally, I really enjoyed the moral aspect of the story.
Jenny: A new world. It’s beautiful.
Doctor: Jenny, be strong now. You need to hold on, do you hear me? We’ve got things to do, you and me, hey? Hey? We can go anywhere. Everywhere. You choose.
Jenny: That sounds good.
Doctor: You’re my daughter, and we’ve only just got started. You’re going to be great. You’re going to be more than great. You’re going to be amazing. You hear me? Jenny?
(Jenny dies in the Doctor’s arms.)
Doctor: Two hearts. Two hearts. She’s like me. If we wait. If we just wait.
Martha: There’s no sign, Doctor. There is no regeneration. She’s like you, but maybe not enough.
Doctor: No. Too much. That’s the truth of it. She was too much like me.
(The Doctor lays Jenny down and kisses her forehead, then goes over to Cobb. Cline and another soldier are holding his arms and making him kneel. The Doctor picks up the pistol and points it at Cobb’s head for a very long time before putting the safety back on.)
Doctor: I never would. Have you got that? I never would. When you start this new world, this world of Human and Hath, remember that. Make the foundation of this society a man who never would.