A Study in Scarlet marks the debut of Sherlock Holmes and Dr. Watson, unravelling a baffling murder mystery that leads from London to the wilds of Utah. In The Sign of Four, Holmes faces a complex case involving a stolen treasure, a secret pact, and a mysterious island. These two novellas introduce readers to Holmes’ razor-sharp intellect and unique methods of deduction, setting the stage for one of the most enduring partnerships in literary history. Together, they are essential reading for anyone who loves a good mystery.