Doctor Who
The Keys of Marinus: The Keys of Marinus (6) (1x26)
Air date: May 16, 1964
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.
- Premiered: Nov 1963
- Episodes: 706
- Followers: 1542
- Ended
- BBC One
- Saturday at 17