"Nothing more likely," exclaimed the inspector. "My theory is that Birchill, while committing the burglary at Riversbrook, was surprised by Sir Horace Fewbanks. It is possible that the judge tried to capture Birchill to hand him over to the police, and Birchill shot him. I believe that Birchill fired both shots--that he had two revolvers. But whatever took place, a dangerous criminal like Birchill would not require much provocation to silence a man who interrupted him while he was on business bent, and a man, moreover, against whom he nursed a bitter grudge. In this case it is possible there was no provocation at all.