Legacy of the Daleks is an original novel written by John Peel and based on the long-running British science fiction television series Doctor Who.

As the Doctor prepares to search for Sam, he receives a psychic cry of pain and despair from his granddaughter Susan, and discovers that it was focused through another TARDIS on a distant planet.

He decides to materialize on Earth following the Dalek invasion, the same time period in which Sam disappeared; perhaps in hope he can find her as well while preventing whatever caused Susan to send the cry.

War seems inevitable, but Haldoran has a secret weapon; his mysterious military advisor, Estro, is supplying him with Dalek guns.

Susan is a Peace Officer, one of the elite who keep the Earth safe from the Dalek Artefacts left behind after the invaders were defeated; when she receives word that someone is tampering with the buried DA-17, she sets off to investigate, but is captured by Estro’s men.

He accompanies her back to London, where he learns of the political situation and is disappointed to find that the people of Earth are fighting amongst themselves rather than working together to rebuild the planet.

The Master retreats back to his TARDIS and leaves with Susan as his hostage, and the Doctor and Donna escape from DA-17 moments before its reactors overload and explode, wiping out the Daleks.

Once the Doctor has fully recovered he returns to the TARDIS and tracks the flight of the Master’s, but when he discovers that it materialized briefly on Tersurus and then left again, he recalls the name of the planet and realizes what happened.