The eponymous Chinese gentlemen is sure that his house will be safe during the famous Boxer revolution that attempted to drive the foreign devils from their country at the start of the 20th century. Reduced to just the British legation, though, the Europeans fight back and his home is accidentally struck resulting in a devastating tragedy. This kindly gent now swears vengeance on those who instigated those killings and over a period of years, he narrows down his dwindling list of targets to just the London-based "Petrie" family. Luckily, Scotland Yard's finest - "Insp. Nayland Smith" (O.P. Hegg...