( Reign of Terror - Very Mild Spoilers )The Reign of Terror
7.8/10 A good story and the first set during a known historical event. The crew get caught up in things and carried along, the Doctor spends a lot of time getting caught out by his own cleverness.
There's a lot a good character stuff through the story, including a great moment in part five when Ian and Barbara argue about the good and evil of what is happening, Barbara bringing in a historical perspective.
As Robert Shearman pointed out at Swancon, this is also the story that breaks the previous cycle of story-telling. In the previous stories, they get separated from the TARDIS, and all their efforts are about getting back to it so they can leave. In this story they get
involved in what's happening, and it essentially sets the direction for many future stories.