On this occasion, the Tuesday Night Club mystery lovers hear a story about a woman who was warned by a psychic of evil and danger in her house. On a full moon, she must watch for the signs: blue primrose means caution, blue hollyhock means danger, and blue geranium means death! It's not long before the woman claims to see blue geraniums in the house. Is Miss Marple up to dealing with the supernatural?

Librarian's note: this entry relates to the short story, "The Blue Geranium." Collections and other stories by the author are located elsewhere on Goodreads. The Miss Marple series includes twelve novels and 20 short stories. Entries for the short stories can be found by searching Goodreads for: "a Miss Marple Short Story."