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 I loved my work. It always seemed to take me out of the dull routine of existence, and give me a new feeling of interest. I shouldn't mind if I had a novel and interesting case to work on right now."
"Would you take one, if it were offered to you?" asked Grace quickly.
"No – I guess not. I haven't forgotten my promise."
"Well – I've decided to release you from that, Richard. I really think you need a little mental exercise and diversion. All play and no work, you know – " She began to arrange the dogwood blossoms she had gathered before breakfast, in a big vase on the table.
Duvall laughed.
"I'm getting along very well," he said. "Don't forget I'm expecting to have that corner lot planted in potatoes to-day." He rose, and coming over to his wife, playfully pinched her cheek. "What's the matter, dear?" he asked. "Are you pining for a little trip to New York yourself? We don't need a murder mystery to make that possible, you know."
Grace shook her head. As she did so, the telephone bell in the hall began to ring. "That may be your murder mystery now," she said, with a laugh.
"More likely the Clarks asking us over to dinner this evening," he returned, as he made his way into the hall.
Grace continued to arrange her flowers. Presently Duvall re-entered the room. There was a curious smile upon his face. "Well," Grace remarked, glancing up. "Which was it? The murder case, or the Clarks?"
"Neither. A mysterious woman, this time, saying that she must see me at once. I told her to come on out."
"Ah! This is serious," his wife laughed. "A mysterious woman! I suppose I ought to be jealous. Didn't she say what she wanted with you?"
"No. But we'll know soon enough. She'll be here at half past nine. Suppose we go and take a look at those Airedale pups." Together they crossed the veranda and made their way toward the barn.
Richard Duvall had changed but little since the days when he had served on the staff of Monsieur Lefevre, the Prefect of Police of Paris, and had taken part in the stirring adventures of the Million Francs, the Ivory Snuff Box and the Changing Lights. The same delightful spirit of camaraderie existed between his wife, Grace, and himself, a spirit which had enabled them, together, to solve some of the most exciting mysteries in the annals of the French detective service. It had been nearly two years, now, since the affair of the Mysterious Goddess, the last case in which Duvall had been concerned, and he was beginning to feel that he would welcome with outstretched arms a chance to make use once more of his exceptional talents as an investigator of crime. Hence he had received Mrs. Morton's telephone call with more than ordinary interest.
The latter had told him nothing of her reasons for interviewing him, contenting herself with the bare statement that she had a letter to him from Mr. Stapleton. This, however, had been enough to set Duvall's nerves to tingling and to cause him to conclude that the mysterious woman who desired to interview him in such a hurry came on no ordinary business. Hence he waited with some impatience for the arrival of half past nine.
A few moments after the half hour, a large automobile swept up the drive, and Duvall, with a nod to his wife, went back to the house to receive his guest. She was waiting in the library when he entered.
"I am Mrs. Morton, of New York," his caller began, handing him Mr. Stapleton's letter.
Duvall read it, but it told him little.
"Mr. Stapleton informs me," he said, looking at his visitor, "that you are in some difficulty or other, and asks that, if I can possibly do so, I try to help you out of it. Did he not also say that I have for some time past given up the active practice of my profession?"
Mrs. Morton nodded, then bent eagerly forward.
"Yes, Mr. Duvall. He told me that. But he also said that, when you heard the circumstances, you might be persuaded to assist me. I am in very deep trouble, and I fear that there is not a moment to be lost."
"What is the nature of your difficulty, madam?" Duvall asked.
"It – it concerns my daughter. I am the mother of Ruth Morton." She made this announcement as though she fully expected Duvall to realize its significance at once, but the latter's face remained quite blank.
"Yes?" he replied, vaguely. "And who is Ruth Morton?"
Mrs. Morton looked at him in pained surprise. The thought that anyone could possibly be ignorant of her daughter's fame and success seemed unbelievable to her. Was not Ruth's name a household word among moving picture "fans" from coast to coast? "Why – Ruth Morton – the motion picture star," she replied. "Surely you must have heard of her."
Duvall smiled, but shook his head.
"I never go to motion pictures," he said. "But that is of no importance. What has happened to your daughter?"
"Nothing. At least I hope not – yet. It is what may happen to her that frightens me so." She took the two threatening letters from her handbag and gave them to the detective. "These came yesterday," she said, simply.
Duvall took the letters, and proceeded to read them with the utmost care. When he looked up, his eyes were sparkling with interest.
"The first letter, I observe," he said, "was mailed night before last, at half-past six, at the general post office. How was the other letter delivered?"
"I do not know. I found it, yesterday forenoon, upon the floor in my daughter's bedroom, an hour or more after she had left the house. She has not seen it. I kept all news of it from her, as I did not wish her to be frightened."
"That was wise, of course," Duvall said. "But how could the letter possibly have been placed where you found it, without your knowledge? Who, beside yourself, was in the apartment at the time?"
"No one but an old negro cook, who has been with me for years. I am quite certain that she had nothing to do with it."
"And the maid of whom you speak?"
"She had left my daughter's room, and come into the dining room, where I was sitting, before Ruth left the bedroom. They went out together. The note could not have been in the bedroom then, or my daughter would certainly have seen it. The thing seems almost uncanny."
Duvall began to stroke his chin, a habit with him when he was more than usually perplexed. Presently he spoke.
"One thing I have learned, Mrs. Morton, after many years spent in detective work. There is no circumstance, however mystifying it may at first appear, which is not susceptible of some reasonable and often very commonplace explanation. You find this letter on the floor in your daughter's bedroom. It was placed there, either by someone within the apartment, or by someone from without. Now you tell me that it could not have been placed from within. Then I can only say that someone must have entered the room, or at least managed to place the letter in the room, from outside."
"That may be true, Mr. Duvall," remarked Mrs. Morton, quietly, "but when you consider that our apartment is on the fourth floor, that one of the windows of the room was closed, and the other only open a few inches, and that the blank wall of the opposite house is at least ten feet away, I fail to see how what you suggest is possible."
Her words filled Duvall with surprise. If what his caller said was true, the case might have elements which would make it more than usually interesting.
"Has your daughter any enemy, who might envy her her success, and wish to deprive her of it?" he asked.
"None, that I know of. But since these two letters came, I feel convinced that someone, whom, I cannot imagine, does feel that way toward her, and that on account of it she is in the gravest danger. Don't you think so, Mr. Duvall?"
"I think it highly probable. And what, Mrs. Morton, would you like to have me do in the matter?"
"Why – come to New York, take up the case, and find out who these wretches are, so that they may be prevented from doing my daughter