Ian: Oh, nothing much.
The Reign of Terror, the final story of Doctor Who's first season, introduces writer Dennis Spooner, who became the script editor for the majority of the second season, and would end up writing The Romans, The Meddling Monk, and the back half of The Daleks Master Plan, as well as contributing to the first episode of Power of the Daleks, becoming one of the best and most important figures in Doctor Who's history. Which you never would have guessed based on his first Who script.
