I wrote up Kerblam! in detail in April last year, after reading the Black Archive volume about the story, so I don’t feel the need to do so again; to repeat my key point, I did not much like Kerblam!, and thought it one of the weakest stories of Jodie Whittaker’s first season. However, since then, the novelisation of the story by its original writer, Pete McTighe, has been published. The second paragraph of its third chapter is:

This malaise had started some time ago – strange sensations that Max couldn’t quite comprehend but now understood to be ‘confusion’ and ‘pain’. Over time, the feelings had grown in potency, and morphed into something else. A sickness. A deep-set anger, boiling from within. What was the word for it? Yes, that’s right … Hate.

I felt that the novelisation redeemed the story in a way that the Black Archive didn’t. Giving a lot more background detail about the characters and the universe made the narrative much fuller and more credible; the punchline, that the computer itself is sentient and crying for help, is given away much earlier in the book, which gives the story much more time to fill out the details. It still doesn’t give the Doctor and her companions much to do, but it is one of the (surprisingly rare) cases where a flawed TV story has a fair number of those flaws corrected on the page. You can get it here.