“Bravo, lad!” he cried, enthusiastically. “I still have two months’ leave, and I’ll go with you, hand in hand, every step of the way.”

The drive to Père-la-Chaise was very long and very boresome. Captain Lindenwald was not inclined to conversation and Grey dared not attempt to lead in the direction he wished, for fear of revealing how little he knew of what had been prearranged. He gathered, however, that it had been planned to start for Budavia early in the following week and that the death of Herr Schlippenbach was not to interfere with this arrangement; but of what they were going for—of what was to follow their arrival, he could glean no hint.

On the return from the cemetery, however, an incident occurred which he regarded as significant, though it only added to his perplexity. The carriage had just crossed the Place de la République, past the great bronze statue which adorns the square, and was rolling leisurely along the Boulevard St. Martin, when Lindenwald suddenly drew back in the corner in evident trepidation, catching Grey’s arm and dragging him back with him.

“For God’s sake!” he whispered, excitedly. “Did you see that man?”

“What man?” Grey asked, a little annoyed. He had seen a score of men. The day was waning; the rain had ceased and there was the usual crowd that throngs the boulevards at the green hour.

Lindenwald clutched him tightly for a moment, huddled away from the window of the voiture. At this point the sidewalks are somewhat higher than the roadway and they had both been looking up at the pedestrians, more interested in the procession than in each other.

“He was standing in front of the Folies Dramatiques,” Lindenwald explained, presently; “his presence here means no good.”

“But who?” Grey persisted.

“It was the Baron von Einhard. You know who the Baron von Einhard is. Ah! It is very plain. In some way, in spite of all our precautions, Hugo has got word. We must now be more than careful. The Baron, my dear Herr Arndt, would not hesitate one little—one very little moment to cut your throat if he got the chance.” Lindenwald shut his teeth tight, puckered his lips, and peered convincingly at Grey between half-lowered lids.

The American crushed back an exclamation of surprise. In its place he substituted an inquiry.