Now the appearance of Mr. Billy Cutts, police detective, as a visitor at the stock broker's office caused the newly engaged clerk no surprise. The fact was, Detective Cutts had been a daily caller upon Mr. Callister for more than a week. Of the nature of the man's business Maxwell, the clerk, was unaware, but it appeared to be involved in much mystery, and was invariably conducted behind locked doors. "Mr. Cutts, sir," said the clerk, as the door of the broker's office was opened in response to his knock. "Show him in, Mr. Maxwell. Show him in," was the bland reply. And during that momentary glimpse of the interior of the private office, the assumed Maxwell saw that the desk was littered with papers and large drawings, closely resembling architects' plans, strange things to be seen in a stock broker's office, to say the least. Detective Cutts had not been closeted with Mr. Callister ten minutes, when the door of the outer office opened again, and a sweet, womanly voice was heard inquiring for the broker without the glass partition. As the voice fell upon the ears of the disguised Frank Mansfield his heart seemed to rise in his throat. It was the voice of Miss Edna Callister, loved by him as deeply as her father was despised. By the earnest advice of Detective Hook, to whom the young man had confided his tender feelings for this beautiful girl, Frank had refrained from visiting the object of his affection or holding any communication with her at all. Difficult and trying as this had been, it was certainly a wise precaution, as can be readily seen. How much under the influence of her father the girl might be it was impossible to tell. Not that Frank loved her the less for the wrong that parent had attempted to do him. But he now saw things by a new and less selfish light than ever before. Had he the right to aspire to the affections of the daughter, when against the father he was working night and day? The severest test to which his disguise had yet been subjected was now about to occur. Could the eyes of love be deceived? There was no time to hesitate, and Frank, mastering all his self-control, stepped from behind the glass partition into the office beyond. "Mr. Callister is engaged just at present, miss. Will you please to give me your name, and I will let him know that you are here." "Say to him that Miss Callister would like to see him," replied the young lady, her clear blue eyes resting upon the face of the clerk. "Please be seated. I will inform him at once." "Edna, you here!" exclaimed the broker, in tones of surprise, as he hurriedly emerged from the office, closing the door carefully behind him, not, however, without enabling the watchful eyes of the disguised clerk to catch a glimpse of Detective Cutts poring over the plans upon the desk within. "Yes, father," replied the girl, coldly, "I am here, as you see."