The Good Doctor is a solid NSA with some interesting concepts. The Doctor returning to a previously visited setting is an occasionally used story mechanic, and this one does some interesting stuff with the Doctors previous visit being turned into religious history. Most of the commentary isn't subtle but it does not need to be, what is here is effective and useful for the younger audience it is aimed at. The Doctor and fam are characterised well, each getting some good moments and their own stuff to do, balanced fairly well for such a short novel.

This is one of the few stories where the Doctors regeneration into a woman factors directly into the plot as if it had been a male incarnation the outcome would have been very different, both in the past and present of this story. Being treated differently because you've become a woman is something both me and the author Juno Dawson can understand as we are both transgender, and I think it does give a unique perspective with which to write the Thirteenth Doctor. I don't feel this is something deeply explored in the novel, but the fact that the Doctor is now a woman directly influences the plot is interesting. Dawson has a fun, simple writing style sprinkled with some modern cultural references.