under those circumstances, I think your wisest course would be to employ a private detective, an investigator of matters of this character, not only to ferret out those who are responsible for these threats, but to take steps to protect your daughter from harm."
"You think, then, that she is really in danger?" Mrs. Morton gasped.
"I do not wish to alarm you, but I very much fear that she is."
"But I don't know any private detectives," Mrs. Morton began.
Stapleton looked up from the letter.
"When I spoke," he said, "I had a certain man in mind. He is not a detective, in the usual sense of the word. You can find plenty of those, of course, but, while they are useful enough in the detection of criminals of the ordinary sort, they would probably have very little success in an affair such as this. The man I had in mind is a brilliant criminal investigator, one whose services I have more than once been obliged to make use of in matters of a personal nature. Some two years ago, for instance, my child was kidnapped, in Paris, and held for ransom. The entire police force of the French capital seemed powerless to discover his whereabouts. At last I called in Richard Duvall, and within a few days my boy was returned to me, and the criminals who had abducted him placed under arrest. It was a marvellous, a brilliant piece of work. I am not likely to forget very soon the mystery of the changing lights." He paused, and Mrs. Morton spoke up eagerly.
"Give me Mr. Duvall's address," she said, "and I will see him at once."
"That," Mr. Stapleton smiled, "is, of course, the great difficulty. Duvall, who is married, lives with his wife on their farm near Washington. They both have plenty of money, and he has practically retired from professional work."
"Then of what use is it to suggest his name?" asked Mrs. Morton, quickly.
"He had already retired," Stapleton rejoined, "at the time of my boy's kidnapping, but I prevailed on him to take up the case. His retirement merely means that he is not in the active practice of his profession. But exceptional cases, cases which by reason of their novelty interest him, he may be persuaded to undertake. I fancy this matter of your daughter's would prove attractive to him. It is unusual—bizarre. I strongly advise you to see him."
"To do that, I must go to Washington?"
"Yes. I will give you a letter which will insure you an interview, and, I hope, enlist his services in your behalf." He pressed a button on his desk, summoning a stenographer. "I sincerely hope that you will be successful."
Mrs. Morton sat in silence while the letter of introduction to Richard Duvall was being written. Then she rose to go.
"I will leave for Washington this afternoon," she announced. "I feel that there is no time to waste."
"You are quite right. And be sure to tell Mr. Duvall that you are a close personal friend of mine, and that anything he can do for you I shall appreciate to the utmost."
Mrs. Morton went back to the apartment, and made her preparations to start. She determined to take a train leaving at half past three, and as Ruth would not return from the studio until later, she called her up on the telephone, and told her of her sudden determination.
"It is a matter of business, dear," she explained. "I will be back to-morrow. Good-by." The girl's cheerful voice reassured her. At least nothing had happened up to now, to give cause for alarm.
It was only when Mrs. Morton was about to leave for the train that her nerves were once more subjected to a severe shock.
The telephone bell rang, and she went to answer it, thinking that Ruth might for some reason have called her up.
Over the wire came a thin, queer voice.
"Beauty is only skin deep," it said. "A breath may destroy it." After that, silence.
Mrs. Morton made a frantic effort to learn the number of the station from which she had been called, but without success. In a rather depressed state of mind, she made her way to the train.
It was half past eight at night when she arrived in Washington, and she at once called up Richard Duvall on the telephone.
To her disappointment, she learned that he was out, and was not expected back until late. There was nothing to do but wait until morning. She retired to her room, full of hope that the following day would bring an end to her fears.
Immediately after breakfast she called again, and this time was more successful. Duvall himself answered the telephone.
"I am Mrs. Morton, from New York," she said, eagerly. "I would like to come out and see you."
"What do you wish to see me about?" the detective inquired.
"It is a personal matter. I will explain when I arrive. I prefer not to do so over the telephone. I have a letter to you from Mr. Stapleton."
"Mr. John Stapleton, the banker?"
"Yes."
"Come, then, by all means, at any hour that suits you. Mr. Stapleton is one of my best friends."
Mrs. Morton hung up the receiver, after assuring him that she would start at once. Then she went out and engaging an automobile, set out for Duvall's place.
Chapter 3
Richard Duvall and his wife, Grace, lingered rather later than usual over their breakfast that morning.
It was a warm and brilliant day in May, and the blossoming beauty of the spring filled them both with a delightful sense of well-being.
Duvall, however, seemed a trifle restless, and Grace observed it.
"What's the matter, Richard?" she asked.
"Oh, nothing." Her husband picked up the morning paper. "They are still looking for the woman in that Marsden case, I see," he remarked.
"Do you know, my dear," Grace said, "I sometimes think that you made a mistake in coming down here to the country to live. Your heart is really in New York, and every time there is a murder case, or a bank robbery, or a kidnapping up there, you are restless as a hen on a hot griddle until the mystery is solved. Why don't you take up your professional work again?" Duvall laid down his paper and regarded his wife with a look of surprise.
"Because, Grace," he said, "you especially asked me, after that affair of the missing suffragette, to finally give up my detective work and content myself with a quiet existence here on the farm. You said, on account of the boy, that I ought not to take such risks."
"Well—suppose I did. You agreed with me, didn't you?"
"Yes—I guess so." Duvall once more picked up the newspaper. "But, naturally, I can't help feeling a certain interest in any striking and novel case that I may read about."
"And I haven't a doubt," laughed Grace, "that you wish that you were back in harness again a dozen times a day. Come now—'fess up. Don't you?"
"Sometimes," granted her husband, with a smile. "You know
