Dame Agatha offers vivid descriptions of her childhood, family life, contemporaries, and travels abroad as well as discussing her own struggles as a writer and the general problems of creative writing.
Realizing that she is too old to travel, Miss Jane Marple decides she is through with crime detection, but a murder that happens almost on her doorstep changes her mind.
Miss Marple finds herself trying to outwit a killer when she decides to investigate her friend Mrs. McGillicuddy's claim that she saw a woman being strangled through the window of a passing train.
Belgian detective Hercule Poirot investigates the curious murder of millionaire Samuel Edward Ratchett in a locked compartment aboard the Orient Express while the train is stranded by a snowdrift. He must find the murderer before he decides to strike again.