This is a Poirot mystery. Poirot is retired, however, his long time friend Mr. Entwhistle asks him to come out of retirement to solve this mystery and it is a good one.
Richard Abernethie is dead. After the funeral, at the reading of the will, Cora -a relative- asks the question, “but he was murdered, wasn’t he?” Mmm. Well, we shall see. Mr. Entwhistle does some sleuthing and finally decides to ask Mr. Poirot for his assistance in solving this case. Was Richard murdered or wasn’t he???
It was a good mystery. I did not solve it! I gave it five stars on goodreads.