On a wet and windy silent night in the sleeping city of London, the body of a man is found sprawled across Millfield Lane. So begins an ill wind and the puzzle of an intriguing stranger in this enchanting Dr Thorndyke mystery.

Richard Austin Freeman (11 April 1862 - 28 September 1943) was a British writer of detective stories, mostly featuring the medico-legal forensic investigator Dr. Thorndyke. He claimed to have invented the inverted detective story (a crime fiction in which the commission of the crime is described at the beginning, usually including the identity of the perpetrator, with the story then describing the detective's attempt to solve the mystery). Freeman used some of his early experiences as a colonial surgeon in his novels. Many of the Dr. Thorndyke stories involve genuine, but often quite arcane, points of scientific knowledge, from areas such as tropical medicine, metallurgy and toxicology.