'It is hardly a matter that we can take up,' an inspector at Scotland Yard said when Mr. Hawtrey showed him the envelope and explained the matter. 'I suppose at bottom it is an attempt to extort money, though one does not see how the writer intends to go about it. If there should be any offer to drop the annoyance on the receipt of a sum of money sent to a post-office or shop, to be called for, we would take it up, watch the place, and arrest whoever comes for the letter. At present there is nothing to go upon, and I don't see that we can do anything in the matter. If you think it worth while you might put it into private hands, but it would cost you a good deal of money, and I don't see that anyone could help you much.' 'I do not care what it costs,' Mr. Hawtrey said hotly. 'Can you recommend any of these private detectives?' The inspector shook his head. 'There are some trustworthy men among them, sir, and some thorough rogues, but we make a point of never recommending anyone. No doubt your own solicitor would be able to tell you of some good man to go to.' Mr. Hawtrey hailed a cab when he went out and told the man to drive to Essex Street. Just as he turned down from the Strand he saw Danvers turn out from the approach to the Middle Temple. He stopped the cab and jumped out. 'I was just going to my lawyer,' he said, 'but I dare say, Danvers, you can save me the loss of time. It generally means at least half an hour's waiting before he is disengaged. Can you tell me of a shrewd fellow who can be trusted to undertake a difficult piece of business?' 'That is rather vague, Mr. Hawtrey,' Danvers laughed. 'I might reply that such a man stands before you.' 'No, I mean a sort of detective business.' 'There are plenty of shrewd fellows who call themselves private detectives, Mr. Hawtrey. A good many of them are too shrewd altogether. Of course, I have been in contact with several of them, and the majority are rogues of the first water. Still, there are honest men among them. If I knew a little more what sort of work you wanted done I should be better able to tell what kind of man you require for it.' 'It is a deucedly unpleasant business, Danvers, but I will gladly tell you what it is, for I want the advice of some one like yourself, accustomed to deal with difficult cases. Can you spare ten minutes?' 'With pleasure. I have no case on to-day. Will you come to my chambers? It is not half a minute's walk, and they are on the ground floor.' 'What do you think of it, Danvers?' Mr. Hawtrey asked, after he had shown the envelope and related briefly his interview with his daughter.