The Tuesday Night Club is a group of people, who gathers for dinners on Thursday evenings. During dinner they tell each other stories about real crimes. The group then tries to solve the case. The first club met at the Danemead, the home of Miss Marple, and the second club met at Gossington Hall. The puzzles which they pose to one another are narrated in The Thirteen Problems.

Members of the first club

Members of the second club

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