The Saltmarsh Murders
This was not a great pick for me.
Not only is this one that has not dated well (and even seems anachronistic for the time is was written), but this is one that heavily draws on an admiration of Freud, which is channeled through Mrs Bradley at every opportunity.
This is also another one where Mrs Bradley seems to call everyone "Dear Child", which was something that grated on me in another book in this series also.
As for the murders, ... by about the half-way point of this book, I didn't even care about the plot anymore.