A new edition of the original classic Sherlock Holmes tales. Including: A Biography of Sherlock Holmes - An Introduction to The Sign of the Four Join us in the second classic Sherlock Holmes mystery by Sir Arthur Conan Doyle as we explore Victorian London with the brilliant detective Sherlock Holmes and his loyal friend, Dr. John Watson. When Mary Morstan presents Sherlock Holmes with the mystery of a missing father and a cryptic message sent from an anonymous benefactor, the great detective is propelled into a complex case of treasure, intrigue, and betrayal. Alongside his trusted friend Dr. John Watson, Holmes embarks on a thrilling chase that takes them from the fog-shrouded streets of London to the bustling docks of the River Thames. As the mystery deepens, the danger intensifies, leading to a confrontation that will test not only Holmes’s brilliance but the very bonds of friendship and trust between the detective and his devoted chronicler. This second novel in the Sherlock Holmes series is a masterpiece of mystery and adventure that stirs the mind and quickens the pulse.