Sarah Jane Smith is a truly remarkable woman who inhabits a world of mystery, danger and wonder; a world where aliens are commonplace and the Earth is under constant threat. A world that Maria Jackson, a seemingly ordinary girl, can only dream of – until she moves in next door. Nothing will ever be ordinary again.

The exploits of a team of people whose job is to investigate the unusual, the strange and the extraterrestrial.

Classic Doctor Who duos are reunited as they board a very special TARDIS on a nostalgic voyage through space and time.

Coal Hill School has been a feature of Doctor Who since the first episode, but now we get to see the day-to-day adventures of the students coping with intrusions from space and time.

A one-episode television pilot for a proposed 1981 spin-off of the British science fiction television series Doctor Who. It features former series regulars Sarah Jane Smith, an investigative journalist played by Elisabeth Sladen, and K9, a robotic dog voiced by John Leeson. Both characters had been companions of the Fourth Doctor but they had not appeared together before. The single episode, A Girl's Best Friend was broadcast by BBC1 as a Christmas special on 28 December 1981 but was not taken up for a continuing series.