"But how do you know his factory is to be attacked? It may be they are planning other damage to-night. We might have had a chance to stop it if we'd followed those two, and now they've got away from us." "Your father ought to have reported Lena and Heinrich to the police anyway." "He said he'd keep watch of Heinie, and no doubt he has. He expected we'd do as well for Lena. We'd better go down and see him about it." "Let me read this paper first," said Hugh. He once again started to unfold the crumpled sheet that Bob had stolen from Lena. "You can't read it." "Why not?" "Try and see." Hugh unfolded the paper and gave it one look. "Why it's written in German," he exclaimed in surprise. "I know it is; that's why I said you couldn't read it." "We must get it translated." "Let's take it down to the factory. We can get Karl Hoffmann to tell us what it says." Without further ado they set out. They walked swiftly and exchanged but few words, for they were both occupied with their own thoughts; a feeling that something was hanging over their heads oppressed the two boys. The country was at war and plotters and spies were abroad in the land. The events of the last two days had convinced them that High Ridge had its share of mischief makers, and they felt sure that that very night a blow would be struck. A walk of twenty minutes brought them to the factory. The low, brick buildings loomed ghostly in the darkness, with only here and there an electric light burning inside as protection against thieves. The small brick office was situated in front of the other buildings and here a light was shining brightly. A guard challenged them. Bob recognized the man as one of his father's employees, and soon convinced him that he and Hugh were all right. They passed on and a moment later were in Mr. Cook's office. Mr. Cook was seated at his desk and in a chair opposite him Sergeant Riley was ensconced. "Well," exclaimed the sergeant as the boys entered, "if ever I saw two hard looking bums you two are it. 'Tis a wonder one of my men didn't run yez in." "We were sort of afraid of that," laughed Bob. "No one bothered us though." "Where's Heinrich?" inquired Hugh. "In the next room," said Mr. Cook. "Where's Lena?" "We lost her." "What do you mean?" Bob told his father what they had done. "It looks serious," said Mr. Cook thoughtfully. "Sergeant Riley has just come from the hospital and he brought me news of Mr. Wernberg." "How is he?" "He's better; he talked a little this evening." "Did he?" cried Bob eagerly. "What did he say?" "He didn't talk connectedly," said Mr. Cook. "He was only conscious for a few minutes, and wasn't well enough to hold a real conversation." "But he must have said something." "He did. He mumbled about bombs, and plans. He talked a lot about a factory, and kept saying, 'hurry,' over and over again." "Didn't any one ask him what he meant?"