“In this case, Crimplesham, who is, in the words of an English classic, a man-of-infinite-resource-and-sagacity, correctly deduces that, of all people, the last whom we shall expect to find answering our advertisement is the criminal himself. Accordingly, he plays a bold game of bluff. He invents an occasion on which the glasses may very easily have been lost or stolen, and applies for them. If confronted, nobody will be more astonished than he to learn where they were found. He will produce witnesses to prove that he left Victoria at 5.45 and emerged from the train at Balham at the scheduled time, and sat up all Monday night playing chess with a respectable gentleman well known in Balham. In this case, the method of inquiry will be to pump the respectable gentleman in Balham, and if he should happen to be a single gentleman with a deaf housekeeper, it may be no easy matter to impugn the alibi, since, outside detective romances, few ticket-collectors and ’bus-conductors keep an exact remembrance of all the passengers passing between Balham and London on any and every evening of the week.
“Finally, gentlemen, I will frankly point out the weak point of all these hypotheses, namely: that none of them offers any explanation as to why the incriminating article was left so conspicuously on the body in the first instance.”
Mr. Parker had listened with commendable patience to this academic exposition.
“Might not X,” he suggested, “be an enemy of Crimplesham’s, who designed to throw suspicion upon him?”
“He might. In that case he should be easy to discover, since he obviously lives in close proximity to Crimplesham and his glasses, and Crimplesham in fear of his life will then be a valuable ally for the prosecution.”
“How about the first possibility of all, misunderstanding or accident?”
“Well! Well, for purposes of discussion, nothing, because it really doesn’t afford any data for discussion.”
“In any case,” said Parker, “the obvious course appears to be to go to Salisbury.”
“That seems indicated,” said Lord Peter.
“Very well,” said the detective, “is it to be you or me or both of us?”