Within a Wall is an early short story, written by Agatha Christie which was first published in The Royal Magazine in October 1925. It was not published as part of a collection until While the Light Lasts and Other Stories in the U.K. and The Harlequin Tea Set and Other Stories in the U.S., both in 1997. This early Christie story is about an artist, his money-loving wife, and another woman whose artistic judgment he relies on.