As usual, he finds interesting things to say about some of the least celebrated stories, even trying to make a positive case for Time-Flight. But towards the end of the book he has to shift format, because there are fewer TV episodes to talk about. There's a lot more about spinoff literature than I remember from previous volumes. The essay near the start on Cold Fusion is particularly good. An upside of the Fifth/Sixth Doctors is that we are now in Big Finish territory, and I wish Sandifer had covered more than one Fifth Doctor audio (though if you have to choose one, he gets it right with Spare Parts) - he does six Sixth Doctor audios (though again, in line with his redemptive policy, this is where Colin Baker shows his strengths).
There are also a number of essays that don't fit any of Sandifer's usual categories: one on Tegan, a long interview with Robert Shearman, several pieces about why and how Doctor Who was cancelled / put on hiatus, and a great one at the start about the Five Faces of Doctor Who season of repeats in 1981. All very good stuff, and I'll be seriously considering this as a potential Hugo nominee for Best Related Work next year.