The Sign of Four is one of Sherlock Holmes`s great adventures, a tale of `an injured lady, half a million in treasure, a black cannibal, & a wooden-legged ruffian`. In the yellow fog of London, a young woman comes to 221b Baker Street with the strange tale of a missing father & the mysterious pearls she is sent anonymously each year. Holmes & Watson are soon swept up in an international puzzle of murder, millions & madness that could cost them their lives