"Your matter of disagreement with the police in Sans Sebastian was over the missing of some money in the hotel where you were staying. The room happened to be next to yours and communicating, if one had the ingenuity to pick the lock of the door. Also your inability to pay the hotel bill hastened your departure."

    "What an editor!" said the other admiringly, but without showing any signs of perturbation or embarrassment.

    "It is my business to know something about everybody," said the editor. "By the way, you may call me Mr. Brown, and if at times I may seem absent-minded when I am so addressed you must excuse me, because it is not my name. Yes, you are the kind of man I want."

    "It is remarkable that you should have found me," said Poltavo. "The cutting"—he indicated the newspaper clip—"was sent to me by an unknown friend."

    "I was the unknown friend," said "Mr. Brown"; "do you understand the position?"

    Poltavo nodded.

    "I understand everything," he said, "except the last and most important of all matters; namely, the question of my salary."

    The man named a sum—a generous sum to Poltavo, and Mr. Brown, eyeing him keenly, was glad to note that his new assistant was neither surprised nor impressed.

    "You will see very little of me at this office," the editor went on. "If you work well, and I can trust you, I will double the salary I am giving you; if you fail me, you will be sorry for yourself."

    He rose.

    "That finishes our interview. You will come here to-morrow morning and let yourself in. Here is the key of the door and a key to the safe in which I keep all correspondence. You will find much to incriminate society and precious little that will incriminate me. I expect you to devote the whole of your attention to this business," he said slowly and emphatically.

    "You may be sure——" began Poltavo.

    "Wait, I have not finished. By devoting the whole of your attention to the business, I mean I want you to have no spare time to conduct any investigations as to my identity. By a method which I will not trouble to explain to you I am able to leave this building without any person being aware of the fact that I am the editor of this interesting publication. When you have been through your letters I want you to translate those which contain the most important particulars and forward them by a messenger who will call every evening at five o'clock. Your salary will be paid regularly, and you will not be bothered with any editorial duties. And now, if you will please go into the outer room and wait a few moments, you may return in five minutes and begin on this accumulation of correspondence."

    Poltavo, with a little bow, obeyed, and closed the door carefully behind him. He heard a click, and knew that the same electric control which had opened the outer door had now closed the inner. At the end of five minutes, as near as he could judge, he tried the door. It opened readily and he stepped into the inner office. The room was empty. There was a door leading out to the corridor, but something told the new assistant that this was not the manner of egress which his employer had adopted. He looked round carefully. There was no other door, but behind the chair where the veiled man had sat was a large cupboard. This he opened without, however, discovering any solution to the mystery of Mr. Brown's disappearance, for the cupboard was filled with books and stationery. He then began a systematic search of the apartment. He tried all the drawers of the desk and found they were open, whereupon his interest in their contents evaporated, since he knew a gentleman of Mr.