                      Valley of Fear
    Returning to his residence, Watson told Holmes about what he had seen in the garden. Holmes analyzed, "Barker and Mrs. Douglas probably saw the murderer, deliberately released him and forged the scene in order not to make their scandal known to the public. I found a dumbbell in the dead man's study. When I asked the housekeeper where the other dumbbell went, the housekeeper answered he didn't know. It's very strange to exercise with only one dumbbell. I suspect the other lost one has some relationships with the case. There is a river outside the house. The lost dumbbell is a heavy thing. Could somebody put the heavy dumbbell in something and throw it into the water?"
    Holmes immediately went to see MacDonald and asked him to release a piece of news -- All the water in the moat round the manor will be pumped out tomorrow. Holmes reckoned somebody would pull something out of the water when hearing the news if he or she had deposited something in it, and that the plot of the case could be clear so long as the lost pack of things were found.
