Sherlock Holmes The Four-Handed Game

In the fog of London town, a man is hounded by mysterious attackers. Each morning John Harden is silently menaced by a different passenger on his train. Objects keep disappearing in his house, then reappearing in bizarre places. Is he losing his mind, or can Holmes and Watson find a pattern to this sly terrorisation?

Holmes and Watson are just coming to grips with this mystery when another lands on their doorstep. So marks the beginning of an unprecedented spate of cases, each more alarming ...