Doctor Who

Season 23, Episode 3

Episode Title: The Mysterious Planet (3)

Air Date: 1986-09-20

Overview:

The Doctor escapes to rejoin Peri on the surface but shortly becomes the prisoner of a surface-dwelling tribe called The Free. Ravalox isn't Ravalox after all, but before the Doctor can learn much more an irresistible agent from UK Habitat comes to fetch him back.