The Corn Is Green

A strong-willed teacher, determined to educate the poor and illiterate youth of an impoverished Welsh village, discovers one student whom she believes to have the seeds of genius in him.

Doctor Who: The Armageddon Factor

The final segment of the Key to Time is at the heart of a devastating war between neighbouring planets Atrios and Zeos. The Fourth Doctor discovers that a sinister entity is manipulating events and the cost of obtaining the final segment may be more personal than he imagined.