In 'Murder Ahoy' Miss Marple investigates murder on a naval cadet training ship. 'Murder At The Gallop' finds Miss Marple beginning an investigation when an old man is found dead, apparently frightened by a cat. 'Murder Most Foul' finds Miss Marple looking into a theatre murder after hearing all the evidence as a juror at the trial. In 'Murder, She Said' an elderly lady witnesses the death of a woman on a passing train and calls in Miss Marple to investigate the murder.