F duty, so I guess it is up to me." From Miss Johnson's room could be heard the subdued sounds of voices in the next room. "Rather unthoughtful of them to discuss such business in such a place, to say the least," remarked Chester. "Apparently they forget that even the walls have ears." The lad laid his ear to the door between the two rooms. Edna stood close behind him, and the two listened eagerly. "Well, then it is all settled," came a low voice from the room beyond. "You report to the chief immediately. I'll remain here an hour, so that we shall not arouse suspicion by going together. But tell the chief I shall be on hand in time." "Good!" came the reply. "I suppose all other details have been attended to and that the thing will be pulled off smoothly. To-morrow night should see the end of Louvain." Chester straightened up. "I must get out of the house before he does," he told the girl. "I must follow him." "But won't you be in danger?" protested Edna. "Why not