Excerpt: ...one of your men in Mr. Summertrees' house, and so learned that he is not the coiner. But your man has not succeeded in getting you evidence to incriminate other people.' 'You've about hit it again, Monsieur Valmont. One of my men has been Summertrees' butler for two weeks, but, as you say, he has found no evidence.' 'Is he still butler?' 'Yes.' 'Now tell me how far you have got. You know that Summertrees deposits a bag of coin every Friday in the Piccadilly bank, and I suppose the bank has allowed you to examine one or two of the bags.' 111 'Yes, sir, they have, but, you see, banks are very difficult to treat with. They don't like detectives bothering round, and whilst they do not stand out against the law, still they never answer any more questions than they're asked, and Mr. Summertrees has been a good customer at the United Capital for many years.' 'Haven't you found out where the money comes from?' 'Yes, we have; it is brought there night after night by a man who looks like a respectable city clerk, and he puts it into a large safe, of which he holds the key, this safe being on the ground floor, in the dining-room.' 'Haven't you followed the clerk?' 'Yes. He sleeps in the Park Lane house every night, and goes up in the morning to an old curiosity shop in Tottenham Court Road, where he stays all day, returning with his bag of money in the evening.' 'Why don't you arrest and question him?' 'Well, Monsieur Valmont, there is just the same objection to his arrest as to that of Summertrees himself. We could easily arrest both, but we have not the slightest evidence against either of them, and then, although we put the go-betweens in clink, the worst criminals of the lot would escape.' 'Nothing suspicious about the old curiosity shop?' 'No. It appears to be perfectly regular.' 'This game has been going on under your noses for how long?' 'For about six weeks.' 'Is Summertrees a married man?' 'No.' 'Are there any women servants in the house?' 'No, ...