As Mr Williamson 's watch was missing and both crimes had been interrupted , they might still have started off as simple robberies .
There were no known connections between the two families , and there was also no apparent motive for this second slaughter .
As Mr Williamson 's watch was missing and both crimes had been interrupted , families might still have started off as simple robberies .
There were no known connections between the two families , and there was also no apparent motive for this second slaughter .