The Musgrave Ritual:: Holmes shows his knowledge of trigonometry and cracks a 250-year-old code in The Musgrave Ritual. The legendary detective also reveals what the missing butler saw and where he is to be found, and also discovers an object of great historical importance. The Man With the Twisted Lip:: Wealthy Neville St. Clair mysteriously disappears. Oddly, he was last seen at the window of a room in the seediest opium den in London. A hideous beggar named Boone, occupant of the room in which St. Clair was last seen, is charged with murdering St. Clair and throwing his body into the river. Holmes gets the real culprit to come clean.