'Well, I do not think there will be any more coming here, dear. I should imagine the Post Office authorities will have no objection to retain them. If there should be any difficulty about it, I will have a lock put on the letter-box and keep the key myself, so that, at least, the servants here will know nothing about it. Are you going out with your cousin this morning?' 'I was going, but I shall make some excuse now; I could not be chattering about all sorts of things with her.' 'That is just what you must do, Dorothy. It has taken the colour out of your cheeks, child, though I suppose cold water and a rub with a hard towel will bring it back again, but, at any rate, do not go about as if you had something on your mind. You may be sure that the servants will be looking at you curiously, whatever I may say to Peters; if they see you are in no way disturbed or annoyed, the matter will soon pass out of their minds, but, on the other hand, if they notice any change, they will be saying to themselves there must be something in it.' As soon as his daughter had left the room Mr. Hawtrey touched the bell. 'I am going out, Peters; if anyone calls to see me you can say that I shall not be in till lunch-time. I may be detained at Scotland Yard. I am going there to set the police on the track of the fellow who sent that letter to Miss Hawtrey this morning. I suppose you noticed it?' 'Yes, sir,' the man replied, in a hesitating tone; 'as I took the letters out of the box and laid them on the hall table, the envelope was back upwards, and I could not help seeing what was on it.' 'I can quite understand that, Peters, and am not blaming you. The words were evidently written with the intention that they should be read by everyone through whose hands it passed. It is evidently the work of some malicious scoundrel, though we have not, of course, the slightest clue as to whom it may be, but I have no doubt the police will be able to get on his track. If you have mentioned it to any of the other servants, tell them that on no account is the matter to be spoken of outside the house. Our only chance of catching the scoundrel is that he should be kept entirely in the dark. Probably the fellow is in communication with some one either in the house or acquainted with one of the servants. If he hears nothing about it, he may suppose the letter has not attracted notice, as he intended it should do, and we shall have some more of them, and this will increase our chance of finding him.' 'I have not mentioned anything about it, sir.' 'All the better, Peters. Should another come do not bring it in with the other letters, but hand it in to me privately. Miss Hawtrey is naturally greatly pained and annoyed, and I should not wish her to know if any more letters come.'