The 'exceptionally rare' 1889 manuscript of The Sign of Four is estimated to sell for up ... The novel has been adapted for both TV and film on several occasions, most recently in the BBC ...
This leads Holmes and Watson to the truth about a secret pact between four convicts during the Indian Rebellion of 1857.
The Sign of the Four is the second novel by Arthur Conan Doyle about master detective Sherlock Holmes and his partner Dr John Watson. In this story they solve a mystery of hidden treasure and murder.