“Logopolis” is a story that probably shouldn’t work as well as it does. I mean, the first two parts are just the Doctor and Adric spouting technobabble and gobbledygook at each other. The introduction of Janet Fielding as the new character Tegan Jovanka gives it a little more life, but it’s the direction that makes it. It’s the first story written for the series by the season’s script editor, Christopher H. Bidmead, and it’s directed by Peter Grimwade. He brings an almost unbearable feeling of doom to the production.
Here’s something I wrote in September 2005: There’s a scene in part one when the Doctor looks across the highway and sees a spectral white figure by a fence staring at him and he almost collapses in shock. It works as well as it does because nobody in either the story or in the audience knows who the figure is, except the Doctor. Watching the story as a repeat from that angle reveals so much about the Doctor’s character and his actions over the next hour or so.
This is especially true in the second episode, where the Doctor confronts the figure, but too far away for Adric, or the audience, to know what they’re saying. But Tom Baker’s body language on that bridge… “I don’t want to go” never broke my heart the way that Baker’s silent, distant, slumped shoulders do.
That white figure really drives what’s going on in this story. (Well, the figure and the music, which is probably from start to finish the most memorable soundtrack ever performed for any Doctor Who adventure.) Nyssa, who we met in the previous story, shows up on an alien planet where the Doctor has gone, and tells Adric that “a friend of the Doctor’s” brought her. Then we see the strange all-white man slip slowly across the screen. Our son thinks that he’s another Time Lord. Good guess. I probably like the answer more than some people do.