Genre: Science Fiction, Fantasy, Drama
Premise: An eccentric yet compassionate extraterrestrial Time Lord zips through time and space to solve problems and battle injustice across the universe, traveling via the TARDIS (Time and Relative Dimensions in Space), which is his old and occasionally unreliable spaceship that resembles a blue police phone box (but changes its appearance depending on its surroundings) and is much, much larger inside than outside.
S04, E06 (First Aired: May. 10, 2008)
The Doctor meets the most important woman of his life.
S04, E08 (First Aired: May. 31, 2008)
The Doctor and Donna must uncover the truth behind the Nodes and the Data Ghost to uncover the library's secret.