'How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?'
Enthralling, fast-paced and undeniably clever, The Sign of Four is Arthur Conan Doyle's second novel to star the iconic and unparalleled consulting detective, Sherlock Holmes.
When Miss Mary Morstan receives a series of mysterious gifts and a cryptic note, ten years after her father's sudden disappearance, she's at a loss of where to turn. Enter detective Sherlock Holmes and his trusted companion Dr John Watson, determined to solve the case. With nothing but a cryptic clue – a map of a fortress labelled as 'The Sign of Four' – Holmes is drawn into a complicated labyrinth of stolen treasure, secret pacts and profound betrayal. Racing against the clock, he is led to the opium dens of London and a decades-old conspiracy born within colonial India, unveiling a case that tests both his intellect and the heart of right-hand man. Dark and richly atmospheric, The Sign of Four blends deduction and danger into Holmes's most perilous exploits yet.
Arthur Conan Doyle (1859 – 1930) was a Scottish writer and physician. Although he also had an affinity to writing fantasy and science fiction, he is most famous for creating the legendary detective Sherlock Holmes. His crime fiction is still widely read, adapted and studied to this day.























