In the morning she asked Elfreda to report for her at the canteen, as she expected to be late in arriving there. After breakfast, during which the girls discussed nothing beyond their own personal affairs, “Captain” Grace went out, this time by way of the front door, heading straight for the canteen. The place was not yet open, so, unlocking the door, the Overton girl stepped in and, sitting down, studied the street keenly. What Grace was seeking to determine was whether or not she had been followed. There being no indication that she had been followed she went out, locking the door behind her, and proceeded directly to the headquarters of the Intelligence Department, which was located in the executive building on the river front. Captain Boucher had not yet come in, and Grace waited for the better part of an hour for him, preferring not to have him called up, for reasons known only to herself. The captain came in briskly, humming to himself, but stopped short when he discovered the demure figure of “Captain” Grace seated at his desk. The Overton girl rose and saluted. “Ah! I have been looking for you. Thank you for the name you sent over. We have been watching that gentleman since, but while his actions at times have been suspicious, we have as yet nothing on him. Can you give me further information that will assist?” Grace said she was not prepared to do so, that what knowledge she had of Yat Sen was only circumstantial, but that she expected to round out the matter very soon and have something more definite for the Bureau. “I suppose, sir, that you discovered that the cause of the fire in Barracks Number One was due to a short circuit?” she questioned innocently. “What! How did you know that?” “Perhaps I surmised it, sir. If I may do so I would offer the suggestion that the wiring of Number Two Barracks be looked over before to-night. If you do not watch out the place will be on fire before you know it.” “Mrs. Gray, what do you mean?” “That there is a Hun plot to cut the ground from under the Army of Occupation, if I may put it that way. There is a big plot on foot here, reaching out through many lines.” “I know it, but that is about all I do know on the subject. If you succeed in leading us to a solution of this problem you will have done quite the biggest thing that has been done yet for the American Army of Occupation. What do you know?” “I know that it is part of the plan to burn down the barracks. Of course the Huns do not wish to destroy Coblenz, but they are perfectly willing to lose such buildings as the barracks. Then again, according to Hun reasoning, the moral effect on the Army of Occupation will be of great value.” “The fools! They haven’t learned their lesson yet. You believe that this attempt is to be made by short-circuiting the electric wires?”