Chauffeur
The assistant stage manager of a small-time theatrical company is forced to understudy for the leading lady at a matinée performance at which an illustrious Hollywood director is in the audience scouting for actors to be in his latest "all-talking, all-dancing, all-singing" extravaganza.
Kroton
The TARDIS arrives on the unnamed planet of the Gonds, who are ruled and taught in a form of self-perpetuating slavery by the alien Krotons — crystalline beings whose ship, the Dynatrope, crash-landed there thousands of years earlier after being damaged in a space battle. The Krotons are in suspended animation, in a crystalline slurry form, awaiting a time when they can be reconstituted by absorption of mental energy. Periodically, the two most brilliant Gond students are received into the Dynatrope, nominally to become "companions of the Krotons", but in truth to have their mental energy drained, after which they are killed.
