The Keys of Marinus

 

The Keys of Marinus

The Keys Of Marinus by Terry Nation, directed by John Gorrie

On the planet Marinus, the scientist Arbitan locks the travellers out of the TARDIS in a desperate bid to convince them to attempt a quest to find the lost keys which power the Conscience of Marinus, a powerful computer which is Marinus' last hope against the onslaught of Yartek and his evil Voords.