Mr. Fortune's Practice by H. C. Bailey.

Mr. Fortune's Practice by H. C. Bailey.  Mr. Fortune's Practice is a 1924 collection of seven detective short stories by H. C. Bailey, featuring the amateur sleuth Dr. Reginald "Reggie" Fortune, a surgeon who uses his medical knowledge and keen observation to solve complex crimes, often assisting the police with cases involving sudden deaths, poisonings, and other mysteries. The book, which includes the famous "The Ascot Tragedy," is praised for its ingenious plots and engaging characters, and is considered a classic in the genre.