The messenger went out and a minute later an individual who might have passed for an ordinary plain-clothes man of the police force entered.
"Blau," said the intelligence official, "this is Mr. Hessenburg, one of our friends from America--Canada. He was with the Canadian army at the front and broke away to bring us some important information. He's been here only a couple of days, but has been followed on the street by someone, not under orders from this office. I want you to go outside and wait until he leaves, and then find out who it is that's following him and why he's doing it. Maybe some other department or the police are laboring under a misapprehension as to our friend's identity."
"Gans gewiss, Herr Hauptmann," said Blau, bowing himself out of the room and indicating acceptance of his commission. The conversation was resumed between the spy and "the baron."
"I'll provide you with a uniform and make you an attache of this office for the present," the latter announced. "Later I'll take up your suggestion for keeping you in this branch of the service and see what I can do. The skill and daring of your achievements thus far deserves recognition, I can say that much at least."
Irving was reassured and encouraged by these words. He was convinced that "the baron" entertained no doubt regarding the genuineness of his representations.
"Why not give me employment that will enable me to advance my efficiency for further spy work?" the boy suggested.
"That's a good idea," declared the intelligence official with a look of professional animation in his eyes. "I think I'll do that. As soon as you get your uniform, report at this office and I'll have you assigned to your new duties. Meanwhile I'll put you on the payroll and give you an order for a month's salary in advance. Your bill at the hotel has been taken care of, but from now on you'll pay that yourself. Lieut. Vollmer was guilty of an inexcusable oversight when he left you without money for your meals and other incidentals. I thought that was being taken care of."
Irving thanked "the baron" for the interest shown in his welfare. Then he took up the subject on which he had expected to make his strongest play with the intelligence official.
"I want to speak to you now," he said, "about a matter that perhaps I should have brought to your attention sooner. It's about the message on my arm. I don't know what's in that message, but it may be that Canadian officials have taken steps to render worthless the information I brought to you. Would it be possible for them to render it of no value to you if they knew the contents of the message I brought?"
The keen interest that "the baron" manifested instantly in these suggestions indicated to Irving that he could hardly have broached a subject that would command closer attention.