A group of friends gathered one evening at the home of Miss Jane Marple form an informal society they call the Tuesday Night Club. Each week a member recounts a real but unsolved mystery from their own experience, and the others try to reason out the truth. Among them are Miss Marple's novelist nephew Raymond West, the painter Joyce Lemprière, the solicitor Mr Petherick, the clergyman Dr Pender, and the retired Scotland Yard Commissioner Sir Henry Clithering, who all assume the quiet, elderly spinster knitting in her chair has nothing to contribute. Time after time, drawing on shrewd observation of human nature and parallels to village life in St Mary Mead, Miss Marple supplies the correct solution the professionals miss. The thirteen linked stories fall into two sequences of six, the second told over a dinner party at Gossington Hall hosted by Colonel and Dolly Bantry, with the actress Jane Helier and Dr Lloyd added to the company, plus a closing case in which Sir Henry helps Miss Marple investigate a death close to home. Each puzzle is self-contained, ranging across poisonings, disappearances, an ancient shrine, and a drowning, while the recurring framing device keeps the focus on competing methods of deduction. Originally written for magazines between 1927 and 1931, the collection establishes the armchair-detective method that defines Miss Marple across the later novels.