Some of Russell T Davies' best work, truly brilliant writing. I love that the story lulls you into a false sense of security, by having that first 45 minutes be your usual fun, sci-fi romp, but then it takes a sharp turn when the doctor tries to make himself leave, and let time run its due course.
You understand all the emotions behind it, if you've been paying attention since 9's "Everyone Lives" speech, and every time since then when he has tried to make that happen again but fails to over and over and over again, you watch him break in slow-motion, this is finally the time that he has had enough, breaks, and does what pleases him, instead of what is right.
At that moment, he IS the villain of the story, and Adelaide Brooke is the hero. It starts out similar to the climax of The Runaway Bride but goes further beyond with the final, brilliant scene. Everything works perfectly, the acting, the writing, The Doctor waltzing out of the Tardis victorious, underscored perfectly by low-key, slightly sinister music, it keeps building and building until it ends in the most horrific way possible.
Perfect! No notes.
10/10