I desire you to take the most rigorous measures without fear or favour regarding this matter of the passports accorded to Madame de Corantin. There has been a disgraceful dereliction of duty, and I intend to make an example of the offender, whoever he may be. Yours very truly, ARCHIBALD FELLOWES. Clancey whistled. “That looks rather awkward for Master Alistair.” There was a knock on the door. It was Inspector Groombridge. “Excuse me, sir, my man has just brought this. It was delivered by a stranger to the hall-porter of the building where Mr. Froelich occupies a flat.” He handed a letter to the Assistant Commissioner, who read it slowly and without comment passed it to Clancey. Clancey, read it through, smiled, and passed it back. “I think that settles it,” he remarked, “and with your kind permission I will now depart.” Nodding farewell to the Assistant Commissioner, Clancey withdrew by the private exit opposite to the one which led into the room where Bobby was miserably awaiting his fate. “Show Mr. Froelich in, Inspector Groombridge, and, by the way, I hope you have treated him with courtesy.” The inspector cleared his throat. “Oh, I think so, sir. Of course, it’s rather difficult in these cases to make a gentleman comfortable, but I gave him a shake-down in my own private room for the night and sent a man for his toilet things and so on in the morning.” “Very well, Inspector; show him in at once.” Bobby came into the room; his expression was more bewildered than apprehensive. The Assistant Commissioner held out his hand, which Bobby took with a look of surprise. “Do sit down, Mr. Froelich. I am so sorry to have troubled you. You will, I am sure, understand that in times like these one has to be very careful, and your acquaintance with Madame de Corantin--” “Madame de Corantin!” Bobby, exclaimed. “What in the world--” “One moment, Mr. Froelich. I’ll try and explain it to you. Madame de Corantin is known to us. She is a very clever emissary of the German Government, and she has succeeded in baffling us entirely up till now because by a chain of coincidences there has been no one who could identify her on the various occasions that she has been in England. Thanks to her influential connections, she has succeeded in obtaining information of considerable value, and has also been enabled to elude both the French authorities and ourselves. We have reason to believe that she has secured travelling facilities and passports through her relations with high Government officials, both French and English, whom she knew before the War. You will understand, therefore, that your acquaintance with her was at first sight a suspicious circumstance. I am glad to be able to tell you, however, that on inquiry we find that you are entirely innocent of any complicity with her plans, and this result of our investigations is confirmed by a letter which she apparently addressed to you.”