A gripping historical suspense novel, set in the present day and Victorian London, centering upon the holy grail of Sherlock Holmes enthusiasts — the author´s famed missing diary. In December 1893, Sherlock Holmes — adoring Londoners eagerly opened their Strand magazines — anticipating the detective´s next adventure — only to find the unthinkable: his creator, Arthur Conan Doyle, had killed their hero off.