Sherlock Holmes' adventures continue in seven surprising cases. Holmes and Watson investigate an alleged haunting at the Diogenes Club, vandalism at a prominent art gallery, the case of a frightened amnesiac, the takeover of 221B by vicious criminals, the sequel to "The Engineer's Thumb, " the defiling of Holmes' Stradivarius violin, and a Christmas story featuring a graveyard with angry insults carved into the headstones. The game is afoot!