Arriving on the techno-Ruritanian world of Tara, Romana easily obtains the Fourth Segment. Getting off the planet, however, isn't going to be quite so easy...
Elenco:
William Hartnell
,
Patrick Troughton
,
Jon Pertwee
,
Tom Baker
,
Peter Davison
,
Colin Baker
,
Sylvester McCoy
.