The Uttermost Farthing

Set in early 1900s London, a wealthy businessman is murdered in his home, prompting an investigation that initially points to his missing secretary. However, the victim's niece believes in the secretary's innocence and hires private detective Dr. John Thorndyke. Utilizing his scientific expertise, Thorndyke uncovers a complex web of financial deceit and betrayal, leading to the true killer. This mystery novel exemplifies the golden age of detective fiction, showcasing Freeman's innovative approach to crime-solving rooted in his medical background.