“I would not like to make a decision regarding a voice when such an important matter is involved,” said the girl gravely. “I am not familiar with some of the tones of your clerks, as they only talk over the ’phone occasionally. But I could not be mistaken in the voice of Tom Baldwin,” she added, as she smiled once more at the boy whom she had so completely vindicated. “I am glad of it,” remarked Mr. Boise. “I never for a moment believed Tom guilty, but I am glad his innocence is so firmly established. I am afraid we shall not discover who sent the message, but I am sure of one thing.” “What is that?” asked his partner quickly. “That whoever did it is an enemy of this firm--I may say a traitor, for it was some one in this office, of that I am positive. If I ever discover who it was, I shall deal severely with him.” Mr. Cutler turned aside and entered his office without a word. “I believe I need detain you no longer, Tom,” said Mr. Boise. “It is long after your regular hour. I think we shall have to raise your salary again, if we keep you working overtime like this,” and he smiled at the boy. “I don’t mind staying,” said Tom genially, “though of course if you’re going to give me more money, I’ll not get out an injunction against you,” and he laughed. “Ah, I see that you are coming on with your study of the law,” commented his employer. “Well, we’ll take the matter under advisement,” he said, in the manner of a judge finishing up a case, “and we will let you know later. Good-night. Good-night, Miss Renfield.” Tom and the central girl walked out of the office together. “I’m ever so much obliged to you,” said Tom, as they went down in the elevator. “Oh, that’s nothing,” replied his companion, whom Tom, stealing a look at now and then, thought quite the prettiest girl he had ever seen. It was the second time he had thought the same thing that day. “So you are the young lady who told me how to fix the cord and plug,” went on our hero. “Yes. You see I’ve been in the central office for some years now, and I’m getting quite interested in the work. I have a brother who is an electrician, and he tells me lots about the instruments, so I have more advantages than the other girls. I often fix my switchboard when it gets out of order.” “You are quite talented.” “Oh, it comes natural to me. But, say, I didn’t want to speak of it to Mr. Boise, but I have a suspicion who sent that message.” “Who?” asked Tom quickly. “Well, I shouldn’t want you to repeat it, but when that cross man--Mr. Cutler, I believe his name is--when he was talking this afternoon, his voice sounded a good deal like the one that sent the second message to the Kittridge firm. I am not positive enough of it to tell Mr. Boise so, for I think Mr. Cutler tried to disguise his voice, but I’d advise you to keep your eyes open.”