Following the Doctor's regeneration into a new, younger body, the TARDIS lands at an Earth colony on the planet Vulcan in the far future. Mistaken for an official Earth Examiner, the Doctor discovers that a scientist called Lesterson is attempting to reactivate two inanimate, subservient Daleks found in a crashed space rocket. The colonists refuse to heed the Doctor's dire warnings that the Daleks are dangerous.
Patrick Troughton
as Dr. Who
Michael Craze
as Ben Jackson
Anneke Wills
as Polly
Robert James
as Lesterson
Nicholas Hawtrey
as Deputy Governor Quinn
Martin King
as The Examiner
Bernard Archard
as Head of Security Bragen
Pamela Ann Davy
as Janley
Peter Bathurst
as Governor Hensell
Edward Kelsey
as Resno
Richard Kane
as Valmar
Peter Hawkins
as Daleks (voice)
