The Sign of Four by Arthur Conan Doyle

A dense yellow miasma swirls in the streets of London as Sherlock Holmes and Dr Watson accompany a beautiful young woman to a sinister assignation.

For Mary Morstan has received several large pearls – one a year for the last six years – and now a mystery letter telling her she is a wronged woman. If she would seek justice she is to meet her unknown benefactor, bringing with her two companions… Read more.