The planet Solos in the 30th century. As Earth slowly moves towards granting Solos its independence, the Doctor and Jo arrive on a mission for the Time Lords. How far will the brutal Marshal go to retain his power over the planet? And why are the native Solosians undergoing a gradual mutation into hideous, insect-like creatures?
Elenco:
William Hartnell
,
Patrick Troughton
,
Jon Pertwee
,
Tom Baker
,
Peter Davison
,
Colin Baker
,
Sylvester McCoy
.