"The Bedchamber Mystery." CS Forester.

One-minute review: Three prim maiden ladies who play whist with Dr. Acheson each week. Three prim Victorian sisters. In going to bed one night, one of the sisters—we’ll never know which one –sits mistakenly on some china and is bleeding profusely in the butt. They must call for the doctor who comes to find the victim covered by a sheet with a hole in it revealing the injured part of the body with the victim lying face down, her face not visible. No one knows which sister it is. The other two are not in the room. The doctor stitches her up. He comes back the following week to remove the stitches with the same sheet and the same hole in it. He returns the following week for their game of whist. But all three sisters are sitting on pillows so we’ll never know which sister was the victim.

75 Short Masterpieces: Stories from the World’s Literature. Ed. Roger B. Goodman. New York: Bantam Books. 1961.