With the library darkening, the Doctor takes on the Vashta Nerada while figuring out what links River Song to his future. Meanwhile, Donna finds out the mystery of Dr. Moon and the Girl.
Episode rating
Cast of episode
68
5
- The Doctor
- Donna Noble
- River Song
- Dr Moon
- Proper Dave
- Strackman Lux
- Anita
- Other Dave
- The Girl
- Dad
- Lee
- Ella
- Joshua
- Miss Evangelista
- Man
- Ella
- Cyberman