At a health resort, Miss Marple becomes suspicious that a man she meets is planning on murdering his wife. It's the Keston Spa Hydro just prior to Christmas where she sees a husband and wife couple, the Sanders, and senses that there's something wrong. Is she becoming desensitized to murder and crime? Or is there something to her concern?

Librarian's note: previously published in the print anthology, The Thirteen Problems.

Librarian's note #2: this entry relates to the short story, A Christmas Tragedy. Collections and the other stories by the author are located elsewhere on Goodreads. The Miss Marple series includes twelve novels and 20 short stories. Entries for each of the short stories can be found by searching Goodreads for: a Miss Marple Short Story.