Fergus Hume's novel, 'The Clock Struck One', is a gripping mystery set in late 19th century England. The story follows the investigation by Detective Gorby into the murder of a wealthy widow, blending elements of detective fiction and melodrama. Hume's writing style is descriptive and atmospheric, pulling the reader into the intricate web of secrets and lies surrounding the case. The novel's intricate plot twists and turns keep the reader engaged until the shocking reveal at the end. 'The Clock Struck One' is a notable example of early detective fiction, paving the way for future crime novels to come. The book is a must-read for fans of classic mysteries and those interested in the development of the genre.