This vintage John Murray edition compiles the four iconic Sherlock Holmes novels—A Study in Scarlet, The Sign of Four, The Hound of the Baskervilles, and The Valley of Fear—into a single "omnibus" volume. Authored by Sir Arthur Conan Doyle, the physician-turned-writer who revolutionized the detective genre, this collection showcases the full-length cases that defined the legendary consulting detective and his companion, Dr. Watson. Bound in original red cloth with the author's facsimile signature on the upper board, this copy presents well for its age, though it shows moderate shelf wear, softening to the spine ends, and some typical toning and foxing to the internal pages and text block edges.