“Your untutored judgment and my measurements have brought us both to the same conclusion—if you can call it a conclusion,” said Lord Peter, bitterly.

“Another thing,” said Parker. “Why on earth should we try to connect B with C? The fact that you and I happen to be friends doesn’t make it necessary to conclude that the two cases we happen to be interested in have any organic connection with one another. Why should they? The only person who thinks they have is Sugg, and he’s nothing to go by. It would be different if there were any truth in the suggestion that the man in the bath was Levy, but we know for a certainty he wasn’t. It’s ridiculous to suppose that the same man was employed in committing two totally distinct crimes on the same night, one in Battersea and the other in Park Lane.”

“I know,” said Wimsey, “though of course we mustn’t forget that Levy was in Battersea at the time, and now we know he didn’t return home at twelve as was supposed, we’ve no reason to think he ever left Battersea at all.”

“True. But there are other places in Battersea besides Thipps’s bathroom. And he wasn’t in Thipps’s bathroom. In fact, come to think of it, that’s the one place in the universe where we know definitely that he wasn’t. So what’s Thipps’s bath got to do with it?”

“I don’t know,” said Lord Peter. “Well, perhaps we shall get something better to go on today.”

He leaned back in his chair and smoked thoughtfully for some time over the papers which Bunter had marked for him.

“They’ve got you out in the limelight,” he said. “Thank Heaven, Sugg hates me too much to give me any publicity. What a dull Agony Column! ‘Darling Pipsey—Come back soon to your distracted Popsey’—and the usual young man in need of financial assistance, and the usual injunction to ‘Remember thy Creator in the days of thy youth.’ Hullo! there’s the bell. Oh, it’s our answer from Scotland Yard.”

The note from Scotland Yard enclosed an optician’s specification identical with that sent by Mr. Crimplesham, and added that it was an unusual one, owing to the peculiar strength of the lenses and the marked difference between the sight of the two eyes.

“That’s good enough,” said Parker.

“Yes,” said Wimsey. “Then Possibility No. 3 is knocked on the head. There remain Possibility No. 1: Accident or Misunderstanding, and No. 2: Deliberate Villainy, of a remarkably bold and calculating kind—of a kind, in fact, characteristic of the author or authors of our two problems. Following the methods inculcated at that University of which I have the honour to be a member, we will now examine severally the various suggestions afforded by Possibility No. 2. This Possibility may be again subdivided into two or more Hypotheses. On Hypothesis 1 (strongly advocated by my distinguished colleague Professor Snupshed), the criminal, whom we may designate as X, is not identical with Crimplesham, but is using the name of Crimplesham as his shield, or aegis. This hypothesis may be further subdivided into two alternatives. Alternative A: Crimplesham is an innocent and unconscious accomplice, and X is in his employment. X writes in Crimplesham’s name on Crimplesham’s office-paper and obtains that the object in question, i.e., the eyeglasses, be despatched to Crimplesham’s address. He is in a position to intercept the parcel before it reaches Crimplesham. The presumption is that X is Crimplesham’s charwoman, office-boy, clerk, secretary or porter. This offers a wide field of investigation. The method of inquiry will be to interview Crimplesham and discover whether he sent the letter, and if not, who has access to his correspondence. Alternative B: Crimplesham is under X’s influence or in his power, and has been induced to write the letter by (a) bribery, (b) misrepresentation or (c) threats. X may in that case be a persuasive relation or friend, or else a creditor, blackmailer or assassin; Crimplesham, on the other hand, is obviously venal or a fool. The method of inquiry in this case, I would tentatively suggest, is again to interview Crimplesham, put the facts of the case strongly before him, and assure him in the most intimidating terms that he is liable to a prolonged term of penal servitude as an accessory after the fact in the crime of murder— Ah-hem! Trusting, gentlemen, that you have followed me thus far, we will pass to the consideration of Hypothesis No. 2, to which I personally incline, and according to which X is identical with Crimplesham.