Sir Henry Clithering, ex-Commissioner of Scotland Yard, is staying with his old friend Col. and Mrs. Bantry, who live near St. Mary Mead.
"When I was down here last year we got into the habit of discussing unsolved mysteries... We each supplied a story to which we knew the answer, but nobody else did. It was supposed to be an exercise in deductive faculties - to see who could get nearest the truth. We hardly realised that Miss Marple was playing; but we were very polite about it - didn't want to hurt the old dear's feelings. And now comes the cream of the jest. The old lady outdid us every time!"
And so it is decided to ask Miss Marple to dinner, and once again she proves that simply by observing human nature in the sleepy village of St. Mary Mead, she is easily able to unravel the mysteries put forward by the other diners.
The four mysteries included in the recording are The Blue Geranium, The Four Suspects, The Companion and The Christmas Tragedy.