Returning from vacation in Vienna, the writer R. finds a letter from an unknown woman who fell in love with him early on and once spent three nights of passion with him. A child was conceived during this time. R. quickly left the young woman for someone else, and he knows nothing about the child. To support it, the unknown woman works as a prostitute and later slept with R. again for money. However, he cannot remember anything about it, no matter how hard he tries. In addition to "Letter from an Unknown Woman," the volume also includes four other stories by Stefan Zweig, including "The Shooter" and "Fantastic Night.".