A young man entered the room two minutes later.

'Mr. Tricher, this gentleman has brought us a letter from Scotland Yard; he is in search of two swindlers who have made off with a good deal of money. His name is Captain Hampton; he does not belong to the British force but is a friend of some of the parties who have been swindled, and has made it his business to find these people. They are believed to have come out in the "Bremen," which arrived here on August 4; but, if not, they may have come by a boat from an English port within a few days of that date. Of course they may have come to Boston or Halifax, or one of the Southern ports. Our first step is to inquire at all the hotels here; will you please to go with him and give him any assistance you can? If you are unsuccessful in your search, Captain Hampton, I shall be glad if you will come in again and talk the matter over with me. I have all the dates of the arrivals of the steamers from the other side, which may help you in deciding at which port you had better continue your search.'

Captain Hampton's guide proved to be a pleasant and chatty young fellow. 'Your first visit here, Captain Hampton?' he asked, as they issued out on the street.

'Yes, it is the first time I have crossed the Atlantic. I have not had much chance of coming before, for I have been out with my regiment in India for the last six years.'

'I suppose it is a big business this, as you have taken the trouble to come out about it.'

'No; in point of money it is not a very large amount. A thousand pounds in money and about two thousand pounds worth of diamonds. I am interested in the matter chiefly because suspicion has fallen upon a lady of my acquaintance, between whom and this woman there is an extraordinary likeness: so great a one that I myself was once deceived by it. The woman herself knows of it, for she personated my friend, and in her name obtained the jewels and money; so you see it is a matter of extreme importance to get her back to England.'

'I can quite understand that. I suppose you have a likeness of her?'

'Yes; at least, a likeness of the lady, which will be quite sufficient to enable anyone to identify the woman at once.'

He handed Dorothy's likeness to the detective.

'There ought to be no difficulty in identifying that,' he said, after examining it closely. 'No one who has seen her will be likely to forget it in a hurry; and what is the man like?'