Unlike some readers, I am not concerned that the main characters appearing in every book in the series behave the same way in each book, since it would not ring true if they did otherwise.
If I have a disappointment with this book, it is the whodunit element. I prefer crime novels that give a chance for me to play at being detective.
The murder comes very early as I expected, after which three men emerge as possible suspects, whether or not their partners are accomplices. There is also the possibility that two of the three might have been collaborating. Was it the victim's brother? The victim and his brother had fallen out over financial issues. Was it the deputy stationmaster, who was a rival applicant for the stationmaster vacancy when it was previously vacant? Was it a confirmed local criminal, who had spent plenty of time in jail previously for a whole string of crimes? None of the three had murdered anybody before.
Along the way, there are various distractions and side issues, including one woman who is so traumatized by the murder that she ends up in a lunatic asylum. Ultimately, a diary found quite late in the story provides the missing clues, but we are told very little about the contents. As such, we don't get a fair chance to play detective, so I feel the author has in some way cheated.
While the ending is disappointing, I nevertheless feel that the story was entertaining. I like at, but I might have loved it with a different ending.