Doctor Who


The Keys of Marinus

Written by Terry Nation
Story 5 | Season 01

Doctor Who
Episode TitlePremiere Date
The Sea Of Death11/04/1964
The Velvet Web18/04/1964
The Screaming Jungle25/04/1964
The Snows Of Terror02/05/1964
Sentence Of Death09/05/1964
The Keys of Marinus16/05/1964

On a remote island of glass surrounded by a sea of acid, there is a machine that can remove evil from the minds of an entire population — the Conscience of Marinus. Fearful of its immense power falling into the wrong hands, its sole guardian has scattered the machine's operating keys across the planet. The TARDIS crew arrives to find the island under attack by the evil Voord. Marinus' last line of defense — and its only hope — is the Conscience machine. The Doctor and his companions must undertake a deadly quest to recover the keys of Marinus...

I don't believe that man was made to be controlled by machines. Machines can make laws, but they can not preserve justice. Only human beings can do that.

The First Doctor


Why can't you see it?

Doctor Who: The Beginning (DVD)

Doctor Who: The Beginning (DVD)

£10.99Buy Now
Dr. First (Roger Hargreaves)

Dr. First (Roger Hargreaves)

£3.49Buy Now
The First Doctor Adventures Vol. 1 (Audio CD)

The First Doctor Adventures Vol. 1 (Audio CD)

£29.99Buy Now



Watch Doctor Who

Find out how to watch the past, present and future adventures of everyone's favourite Time Lord!


Catch up on the latest series!

BBC America

On Demand

Download or stream
your favourite episodes

HBO MaxBritBox