Watch Doctor Who Episodes
The Third Doctor brings the TARDIS to the planet Spiridon, which hides deadly secrets: carnivorous plants, a planetary core of molten ice, invisible inhabitants, and most frightening of all, an army of Daleks, ready to sweep across the galaxy.
Materialising on an Earth cargo spaceship in the 26th century, the Doctor and Jo are caught up in the tensions between the Earth and Draconian Empires, a cold war that is rapidly becoming hotter. With both sides accusing each other of aggression, the Doctor suspects a third party might be involved. But who would benefit from the devastation of an interplanetary war?
The home planet of the Time Lords is under siege, by an unknown force that by all accounts should not even exist. The only person who can help them is the Doctor, but even he will need assistance — from his previous selves.
The Third Doctor and Jo investigate the workings of the TOMTIT machine, a wondrous device created by Professor Thascalos. Neither Thascalos or TOMTIT are what they seem, and what secret power is locked within the crystal of Kronos?
It is the 30th century, near the end of the Earth Empire. On the colony world of Solos, something is transforming the human population, turning them into hideous mutants. But as the Third Doctor and Jo find out, that is only the beginning.
The Third Doctor and Jo land on the planet Peladon, where they become embroiled in the politics of its admission to the Galactic Federation, and have to contend with an ancient royal curse.
Rebels from a future Earth conquered by the Daleks travel to the 20th Century to prevent that from happening. But will their actions prevent that future, or make it inevitable?
The Axons land on Earth, desperately in need of fuel. They propose to exchange the miracle substance they call Axonite for some much needed energy. Axonite is a “thinking” molecule that can replicate any substance… or so they claim. As it turns out, the ship is a single organism called Axos whose purpose is to feed itself by draining all energy through the Axonite (which is just a part of itself), including the energy of every life form on Earth. The deception about the Axonite’s beneficial properties was to facilitate the distribution of Axonite across the globe.
The Third Doctor and Jo visit the remote Stangmoor Prison to examine a new method of “curing” criminality, whereby the negative impulses are removed from the brain using the Keller Machine to enact the Keller Process. Professor Kettering, who is managing the delivery of the Process at the behest of the absent Emil Keller, reconditions a number of inmates including Barnham, a hardened criminal who is reverted to a more innocent and childlike state by the Process. The Doctor’s suspicions about the Keller Machine are heightened following a string of deaths, including that of Kettering himself, which seem to occur when the Machine is operated. Each death seems to be triggered by visions of personal phobias – and the Doctor is seemingly threatened by an inferno when he gets too close to it.
At a circus, a lorry materialises out of thin air with the distinctive sound of a TARDIS. The occupant is a thin, bearded man dressed in a black suit who introduces himself as the Master to the circus owner, Rossini (though his real name is Russell), and hypnotises him. Subsequently, the Master and Russell break into the National Space Museum and steal a translucent plastic polyhedron, one of the energy units used by the Nestene Consciousness in their attempted invasion of Earth. The Master then takes the energy unit to a radio telescope facility, killing the technician on duty with a weapon that shrinks the victim, leaving a twisted, doll-sized body. The Master then hooks up the energy unit to the radio telescope and sends a signal into space.