By Dorothy L. Sayers
A Lord Peter Wimsey Novel
A man is discovered dead at the gentlemen's club that has Lord Peter as one of its members. As the man, General Fentiman, was quite elderly and known to have a weak heart, it is assumed that he died of natural causes.
But Lord Peter has his doubts. Something about the corpse seems off.
One of the puzzles surrounding Fentiman's death is exactly when he died. Fentiman had a wealthy sister whose will stated that he would inherit her fortune if she died before him. Amazingly, the sister, Lady Dormer, died at approximately the same time as her brother. The time of her death is known. But the time of the Fentiman's passing can only be estimated.
Lord Peter takes on the chore to pinning down Fentiman's movements the day before he died and the day he died. Talking to everyone at the club who might have seen him the day before or the next day, patrons and employees, all he can discover is that no one saw Fentiman arrive at the club the morning of his death. So the body is exhumed and an autopsy done which might help establish the death time. What is does reveal is poison, in the form of a drug that can cause a person's heart to stop beating. Clearly it is not a case of natural causes but is a murder. And clearly it is all about the money. One of Lady Dormer's heirs is a greedy killer. Lord Peter is on the case.
This was a pretty good read. At one point in the story, Lord Peter gets punched in the face, which he probably deserved. Also, the author includes a domestic spat that reads so true to life, it's amazing.
This book dates from 1928. It is now old enough now that it is in the public domain (in the USA). It is free to read online at Project Gutenberg.