An 8-million-year-old skull is the subject of experiments. Tom Baker, Louise Jameson. Colby: Edward Arthur. Thea: Wanda Ventham. Ted Moss: Edward Evans. Tyler: Geoffrey Hinsliff. Fendelman: Denis Lill.

The Doctor, Sarah and Harry return to Earth in response to the Brigadier's summons. UNIT are investigating a series of attacks on North Sea oil rigs and have set up a temporary HQ in the Scottish village of Tullock. The attacks are the work of a huge cyborg, the Skarasen, controlled by a group of aliens called Zygons whose spaceship lies at the bottom of Loch Ness.

The Doctor, Romana, K9 and Adric - an Outler from Alzarius who has stowed away aboard the TARDIS - arrive on a planet where the native villagers live in fear of 'the Wasting' and of three Lords named Zargo, Camilla and Aukon who rule from an imposing Tower. The Lords are soon revealed to be vampire servants of the last of the Great Vampires, a race referred to in Time Lord mythology..

An alien spaceship with a crew of seemingly friendly humanoids lands on Earth.

The overlap between quantum reality and science fiction is discussed.

The overlap between quantum reality and science fiction is discussed.

Mars, 2059. Bowie Base one. Last recorded message: don't drink the water. don't even touch it. not one drop... Confused? All will be revealed in The Waters of Mars, starring Lindsay Duncan as the Doctor's cleverest and most strong-minded companion yet.

The newly regenerated Doctor and Amy Pond must save the world in less than 20 minutes from galactic policemen known as the Atraxi.

The overlap between quantum reality and science fiction is discussed.

The overlap between quantum reality and science fiction is discussed.