This series is set in post war London, and the countryside. It is a gentle read - not withstanding the murders, muggings and beatings - and is set at a much gentler pace than people nowadays are used to. Checking that someone's OK means a half day train journey, phoning someone means sending someone else to get them to a neighbour's phone. I found this story just a bit slower than the previous one.
This is, however, a very enjoyable read, both in the story and the telling of it.