The Doctor and Leela have been cloned and miniaturised and injected into the Doctor's body. There they must fight the virus on a microscopic level before time runs out.
Drama
Year 1977
23 min
The series bids farewell to its Gothic era and lightens its touch with a return to deep space, and the introduction of K-9. But switch the lights off for the first one. On a remote lighthouse, the Doctor, and Leela find themselves at the mercy of a killer!
The TARDIS lands on Fang Rock island at the start of the 20th century. There the Doctor and Leela discover a lighthouse keeper has been killed and a creature is at large.
A thick fog surrounds Fang Rock and a ship is wrecked. The survivors take shelter in the lighthouse but all are in deadly peril from the alien menace that stalks the island.
As the alien Rutan picks off the remaining humans one by one, the Doctor devises a desperate plan to defeat the alien and repel the approaching Rutan mothership.
An alien virus infects the human crew of a refuelling station on Titan, one of the moons of Saturn. The Doctor is also infected and becomes possessed by the will of the Nucleus.
As the Doctor's condition worsens, he instructs Leela to pilot the TARDIS to the Bi-Al Foundation. The only chance of curing the Doctor is to literally get inside his head.
The Doctor and Leela have been cloned and miniaturised and injected into the Doctor's body. There they must fight the virus on a microscopic level before time runs out.
The Nucleus has escaped the Doctor's body and grown to human size. Its plans to spawn and infect the whole galaxy are nearing fruition. And it looks like K-9 has a new master…
The Doctor and Leela arrive in present day England at Fetch Priory where a mysterious skull that is older than mankind is exerting a deadly influence on those around it.
As Thea succumbs to the power of the skull, the Doctor realises that an ancient horror from the mythology of his own people is manifesting at Fetch Priory.
Stahl intends to control the power of the Fendahl for himself. The Doctor and Leela take a trip in the TARDIS to discover the truth about the ancient evil from the dawn of time.
The TARDIS lands on a spaceship which is crewed by the survivors of the planet Minyos who are on a quest to find the lost ship, the P7E. Their journey has taken them 100,000 years.
When their ship crashes beneath the surface of a newly formed planet, the Minyan survivors discover what they have been searching for. But their arrival is not welcomed.
The Minyans are eager to recover the race banks that they have waited so long to find, but the Doctor becomes suspicious when the Oracle simply allows Jackson to take them.
Leela is concerned by the Doctor’s strange behaviour when, after a secret meeting with aliens, he returns to Gallifrey and abruptly stakes his claim on the Time Lord presidency.
The Doctor has betrayed his own people and enabled a Vardan invasion of Gallifrey. Leela joins forces with the Outsiders and prepares to strike back against the aliens.
As the Vardans finally fully materialise on Gallifrey, the Doctor prepares to spring his trap. But does a more deadly alien force lie behind the Vardans?
Stor, the Sontaran leader, finally gains access to the TARDIS in search of the Great Key of Rassilon and a dangerous game of hide and seek begins inside the Doctor’s ship.
Start a BritBox subscription to watch the next episode and enjoy unlimited access to our great collection of British TV!
This content is not currently available on this device.
Please try again later.Close.
2011.
Close.
2005.
Close.
2001.
Close.
400.
Close.
Something has gone wrong. We hope to resolve the issue very soon. 404.
Close.
Something has gone wrong. Please, try again. 403.
Close.
We’re experiencing technical difficulties, please try again later. 500.
Close.
Something has gone wrong. Please, try again. 2003.
Close.
Something has gone wrong. Please, try again. 2015.
Close.
Something has gone wrong. Please, try again. 2009.
Close.
Something has gone wrong. Please, try again. 2007.
Close.
Something has gone wrong. Please, try again. 2008.
Close.
Something has gone wrong. Please, try again. 2006.
Close.
Something has gone wrong. Please, try again. 2002.
Close.
This browser is not supported for playback of this content, please update to the latest browser version and try again. Please refer to your browser's Help to find out more. 2013.
Close.
Only Safari is supported for playback of this content. Please, switch to this browser. 2013.
Close.
You don't have permission to watch this content.
This can be because you're in a country where BritBox is not available, or because you're using a VPN.
If you believe you're seeing this message in error, please visit britbox.me/location to learn more.
Close.