It is London in the year 1886, the noisy London that is filled with immigrants, homeless, political groups and searches for opportunities from everywhere, and in the midst of all this the police find a corpse of an American death Holmes, who discovers the mysterious crime puzzle, to discover that it is not an ordinary murder and it is not as it seems at all. It is the novel that witnesses the emergence of legendary investigator Sherlock Holmes, translated in full for the first time in the hands of the Arab reader