Doctor Who

The Trial of a Time Lord - The Mysterious Planet (3) (23x3)

Air date: Sep 20, 1986

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.