Juve had uttered these words with the greatest composure; but the slight tremble in his voice would have made it clear to anyone who knew him well, that the detective was maintaining his self-control only by a violent effort.

The colonel replied in a tone stiff with offence:

"I persist in my opinion: you have no right to meddle in an affair which concerns us alone. The death of Captain Brocq coincides with the loss of a certain secret document: is it for you or for us to institute an enquiry into it?"

After a pause, Juve's retort was:

"You must permit me to leave that question unanswered."

With all the bluntness of a military man, Colonel Hofferman had put his finger on the open wound which for long years had been a source of irritation to the detective force and the intelligence department alike, when, owing to circumstances, both were called on to intervene at one and the same time. In cases of theft and of spying the conflict was ceaseless.

Monsieur Havard, Juve's chief, had talked this matter over the night before, and his last words of command were:

"Above all, Juve, manage matters so that there is no fuss!... There must not be a fuss!"

Colonel Hofferman, misinterpreting the detective's attitude, turned triumphantly to the Under-Secretary:

"Not only that," he continued, "I think there has been far too much talk made about the death of Captain Brocq. This officer was the victim of an accident. We cannot discuss it. That is all there is to be said. It really does not matter much. We of the Intelligence Department are soldiers, and believe in a policy of results: at the present moment we have lost a document: we are searching for it: action must be left to us.... And, Monsieur, I revert to my first question—what the devil was the police doing at Captain Brocq's—what business was it of theirs? Really, the detective service is arrogating to itself more and more powers—powers that cannot be sanctioned, that will not be granted or permitted."