`There`s the scarlet thread of murder running through the colourless skein of life, and our duty is to unravel it, and isolate it, and expose every inch of it`. Arriving in the wilderness of London and in need of lodgings, Dr John Watson finds himself living at 221b Baker Street with one Sherlock Holmes. When a corpse is discovered in a derelict house Watston, fascinated by his brilliant, eccentric companion, is soon drawn into Holmes` investigations. There`s no sign of a struggle, no wounds on the body, yet scrawled in blood across the walls is the word RACHE - revenge. Watson is baffled but for Holmes the game is afoot...