“My dear Wimsey,—A line as I promised, to report progress, but it's precious little. On the journey up I sat next to Mrs. Pettigrew-Robinson, and opened and shut the window for her and looked after her parcels. She mentioned that when your sister roused the household on Thursday morning she went first to Mr. Arbuthnot's room—a circumstance which the lady seemed to think odd, but which is natural enough when you come to think of it, the room being directly opposite the head of the staircase. It was Mr. Arbuthnot who knocked up the Pettigrew-Robinson's, and Mr. P. ran downstairs immediately.
Mrs. P. then saw that Lady Mary was looking very faint, and tried to support her. Your sister threw her off—rudely, Mrs. P. says—declined 'in a most savage manner' all offers of assistance, rushed to her own room, and locked herself in. Mrs. Pettigrew-Robinson listened at the door 'to make sure,' as she says, 'that everything was all right,' but, hearing her moving about and slamming cupboards, she concluded that she would have more chance of poking her finger into the pie downstairs, and departed.
“If Mrs. Marchbanks had told me this, I admit I should have thought the episode worth looking into, but I feel strongly that if I were dying I should still lock the door between myself and Mrs. Pettigrew-Robinson. Mrs. P. was quite sure that at no time had Lady Mary anything in her hand. She was dressed as described at the inquest—a long coat over her pajamas (sleeping suit was Mrs. P.'s expression), stout shoes, and a woolly cap, and she kept these garments on throughout the subsequent visit of the doctor. Another odd little circumstance is that Mrs. Pettigrew-Robinson (who was awake, you remember, from 2 a.m. onwards) is certain that just before Lady Mary knocked on Mr. Arbuthnot's door she heard a door slam somewhere in the passage. I don't know what to make of this—perhaps there's nothing in it, but I just mention it.
“I've had a rotten time in town. Your brother-in-law elect was a model of discretion. His room in Albany is a desert from a detecting point of view; no papers except a few English bills and receipts, and invitations. I looked up a few of his inviters, but they were mostly men who had met him at the club or knew him in the Army, and could tell me nothing about his private life. He is known at several night-clubs. I made the round of them last night—or, rather, this morning. General verdict: generous but impervious. By the way, poker seems to have been his great game. No suggestion of anything crooked. He won pretty consistently on the whole, but never very spectacularly.
“I think the information we want must be in Paris. I have written to the Sûreté and the Crédit Lyonnais to produce his papers, especially his account and cheque-book.
The former title of the French National Police was La Sûreté Nationale. It served initially as the criminal investigative bureau of the Paris police and did not function as the national command and control organization until much later, by which time it no longer had any detectives on its staff.
Both the PP of Paris's own Brigade Criminelle and the Direction centrale de la police judiciaire trace their history directly to the Sûreté.
Crédit Lyonnais is a historic French bank. In the early 1990s it was the largest French bank, majority state-owned at that point. Crédit Lyonnais was the subject of poor management during that period which almost led to its bankruptcy in 1993. It was acquired by another French bank (Crédit Agricole) in 2003.
“I'm pretty dead with yesterday's and to-day's work. Dancing all night on top of a journey is a jolly poor joke. Unless you want me, I'll wait here for the papers, or I may run over to Paris myself.
“Cathcart's books here consist of a few modern French novels of the usual kind, and another copy of Manon with what the catalogues call 'curious' plates. He must have had a life somewhere, mustn't he?
That would be French erotic novels. Not quite sure what "curious" plates means - more erotica?
“The enclosed bill from a beauty specialist in Bond Street may interest you. I called on her. She says he came regularly every week when he was in England.
“I drew quite blank at King's Fenton on Sunday—oh, but I told you that. I don't think the fellow ever went there. I wonder if he slunk off up into the moor. Is it worth rummaging about, do you think? Rather like looking for a needle in a bundle of hay. It's odd about that diamond cat. You've got nothing out of the household, I suppose? It doesn't seem to fit No. 10, somehow—and yet you'd think somebody would have heard about it in the village if it had been lost. Well, so long,