Sorry, this episode is not currently available

The Keys of Marinus

The Doctor solves the murder mystery and finds the final missing key. With Ian now free, the travellers return to the island only to discover that Arbitan has been murdered.

Release date:

25 minutes

Last on

Sat 16 May 1964 17:15


Role Contributor
Doctor WhoWilliam Hartnell
Barbara WrightJacqueline Hill
Ian ChestertonWilliam Russell
Susan ForemanCarole Ann Ford
YartekStephen Dartnell
AltosRobin Phillips
SabethaKatherine Schofield
DirectorJohn Gorrie
ProducerVerity Lambert
WriterTerry Nation

The Doctor Who Game Maker is Here!

Doctor Who Game Maker

Want to make brilliant Doctor Who games? Now you can!

Doctor Who on Social

Doctor Who on Social

Check out the best of the latest news and photos from our Twitter and Instagram accounts!

Buy online

Buy online

Available on: DVD

From suppliers including:, Zavvi

Where to buy