The TARDIS brings the Doctor and Sarah to Exxilon, but not by choice – an enormous sentient city on the planet drains so much energy from everything around it that the TARDIS is quickly rendered powerless. And the Doctor is not the only unwelcome visitor on Exxilon: an expedition of humans is there mining a substance necessary to cure a plague on Earth, though their ship is now useless. They called for backup from a relief ship, but to their horror, the ship that shows up comes down for a hard landing…and in any case, it’s not another human expedition. The ship that arrives is full of Daleks, on a mission seeking that same precious drug. As the human expedition’s weapons are useless, they and the Doctor are powerless as the Daleks line them up for extermination.
written by Terry Nation
directed by Michael Bryant
music by Carey Blyton and played by the London Saxophone Quartet
Cast: Jon Pertwee (The Doctor), Elisabeth Sladen (Sarah Jane Smith), Duncan Lamont (Dan Galloway), John Abineri (Richard Railton), Neil Seiler (Commander Stewart), Julian Fox (Peter Hamilton), Joy Harrison (Jill Tarrant), Mostyn Evans (High Priest), Michael Wisher (Dalek voices), John Scott Martin (Dalek), Cy Town (Dalek), Murphy Grunbar (Dalek)
LogBook entry & review by Earl Green