The Mystery of the Blue Train by Agatha Christie
The daughter of a wealthy American is murdered and her rubies stolen aboard the Blue Train from Calais to Nice. Whodunit? Her estranged husband? Her maid? Her secret lover? Her estranged husband’s secret lover? The nice girl from St. Mary Meade? The not-so-nice cousin of the nice girl from St. Mary Meade? The mysterious Marquis?
I kept waiting for some other connection to St. Mary Meade and was wondering why it was there, but there seemed to be no reason, except, perhaps, that must be the place where all the old busy body ladies live. (It was, after all, Miss Marple’s home town.)
A good story, and a very good presentation of the exasperating characteristics of Poirot, but the ultimate reveal was a little contrived with conjured information that the reader is unlikely to intuit.

