Elementary, my dear Watson. The world famous detective Sherlock Holmes and his companion Dr Watson are once again on the trail of those notorious arch villains Professor Moriarty and Colonel Sebastian Moran with the Sherlock Holmes Card Game! Travel with them by cab and train as you seek clues and suspects. Police Inspectors, Alibis and even thick fog will cause confusion but finally an Arrest will be made and Holmes and Watson will have cracked another intriguing case.