The Red Thumb Mark (1907). By

Book 1 in the medico-legal detective Dr. Thorndyke's mystery series. Reuben Hornby is accused of stealing diamonds from the safe of his uncle-his employer and benefactor. The sole evidence, but a damning one, is a paper, dropped in the safe in hurry, by the robber, bearing a fresh and bloody thumbprint. The thumbprint of Reuben!............ 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. Early life: Austin Freeman was the youngest of the five children of tailor Richard Freeman and Ann Maria Dunn. He first trained as an apothecary and then studied medicine at Middlesex Hospital, qualifying in 1887. The same year he married Annie Elizabeth, with whom he had two sons. He entered the Colonial Service and was sent to Accra on the Gold Coast. Career: In 1891 he returned to London after suffering from blackwater fever but was unable to find a permanent medical position, and so decided to settle down in Gravesend and earn money from writing fiction, while continuing to practise medicine. His first stories were written in collaboration with John James Pitcairn (1860-1936), medical officer at Holloway Prison, and published under the nom de plume "Clifford Ashdown". His first Thorndyke story, The Red Thumb Mark, was published in 1907, and shortly afterwards he pioneered the inverted detective story, in which the identity of the criminal is shown from the beginning. Some short stories with this feature were collected in The Singing Bone in 1912. During the First World War he served as a captain in the Royal Army Medical Corps and afterwards produced a Thorndyke novel almost every year until his death in 1943. Freeman claimed to have invented the inverted detective story in his 1912 collection of short stories The Singing Bone. "Some years ago I devised, as an experiment, an inverted detective story in two parts. The first part was a minute and detailed description of a crime, setting forth the antecedents, motives, and all attendant circumstances. The reader had seen the crime committed, knew all about the criminal, and was in possession of all the facts. It would have seemed that there was nothing left to tell, but I calculated that the reader would be so occupied with the crime that he would overlook the evidence. And so it turned out. The second part, which described the investigation of the crime, had to most readers the effect of new matter."