Presuming that the assassin was indeed after the jewels, it is very instructive to note his knowledge of their location, and also its limitations. Why did he go straight into the spare bedroom where the jewels were actually kept? The same question may be asked with equal force if we consider that he was after the papers. Why the spare bedroom? Any knowledge gathered from outside (by a watcher in the back-yard for example) would go to the length of ascertaining which was the old lady’s room. One would expect a robber who had gained his information thus, to go straight to that chamber. But this man did not do so. He went straight to the unlikely room in which both jewels and papers actually were. Is not this remarkably suggestive? Does it not pre-suppose a previous acquaintance with the insi
