The vast housing complex known as Paradise Towers, some time in the future. In search of a top-quality swimming pool the Doctor and Mel arrive to find a society on the point of collapse. And the Towers' robotic cleaners seem a bit overzealous too...
Elenco:
William Hartnell
,
Patrick Troughton
,
Jon Pertwee
,
Tom Baker
,
Peter Davison
,
Colin Baker
,
Sylvester McCoy
.