The Moving Finger book by Agatha Christie

The placid village of Lymstock seems the perfect place for Jerry Burton to recuperate from his accident under the care of his sister, Joanna. But soon a series of vicious poison-pen letters destroys the village's quiet charm, eventually causing one recipient to commit suicide. The vicar, the doctor, the servants—all are on the verge of accusing one another when help arrives from an unexpected quarter. The vicar's houseguest happens to be none other than Jane Marple.

Librarian's note: this entry is for the novel, "The Moving Finger." Collections and other Miss Marple stories are located elsewhere on Goodreads. The series includes 12 novels and 20 short stories. Entries for the short stories can be found by searching Goodreads for: "a Miss Marple Short Story."