221b Baker Street (sibariautonomo.info) . for repair, Cotson contaminated the ring with cyanide poison, and waited anxiously for their next big poker game.
Based on the board game of the same name, 221 B Baker St. pits up to four players Clue. Yes this is basically all 221B Baker St. is. A game of Clue, with 4.
PDF file with clues for 2014 Gibsons edition of 221b Baker Street. (N.B. May be some mistakes due to scanning, if in doubt double check with the book. 221B Baker Street: The Master Detective Game:: 221B Solution Checklist -- Large.