Duvall made his appearance at the Morton apartment the following morning in his ordinary guise. It was his intention, when the time came, to disappear from the case in his normal person, to reappear in it, later, in a complete disguise. But that time, he felt, had not yet arrived. Mrs. Morton received him in fairly good spirits. Her daughter, she said, had had a restful night, in spite of her terrible experience. When Ruth rose from the breakfast table to greet him, he was gratified to find that she showed no great traces of the fright of the evening before. "I'm feeling almost myself again, Mr. Duvall," she said. "I've made up my mind not to let these people frighten me again." "Nothing further occurred last night, of course," Duvall asked. "Nothing," replied Mrs. Morton. "I could almost believe the whole thing a horrible dream." They did not touch on the question of going to a hotel, during the short interval that elapsed before they set out for the studio. Duvall was anxious to see Mr. Baker. He hoped sincerely that by means of the photograph which had been in the company's files, some trace of the persons responsible for the threats might be obtained. The trip to the studio was made most uneventfully, and Ruth started in with her work in very good spirits. Duvall, leaving the girl with her mother, sought out Mr. Baker in the latter's private office. "Hello!" Baker cried, grasping the detective's hand warmly. "Anything new?" "Not a thing. How about the photograph we were going to trace?" Mr. Baker frowned. "It's a curious thing," he replied. "Most curious. The picture in question was, I find, taken from the files by Mr. Moore, our president, and placed on his desk. He always admired it, and kept it there, along with a number of others, to show to persons calling upon him. Now, it seems, it has disappeared. There is not the slightest trace of it." "But," Duvall objected, "who could have taken it?" "A dozen people. Half a hundred, I guess. You see, Mr. Moore's office is a big room, just beyond here." He rose, and led the detective through a short corridor. "Here it is," he went on, throwing open the door. "This is where Mr. Moore receives his callers. It is his reception room, and no private papers are kept here. Those are all in the smaller office adjoining. This room is open at any time. After Mr. Moore leaves in the evening, and he often leaves early, anyone might come in here. And when the offices are closed, at night, I suppose any employee of the company might look in, if he cared to do so, without anyone objecting. You see, this is a sort of public room. The inner office is always kept locked, but there has never seemed to be any good reason for locking this one." "Still, although you cannot tell who has taken the picture, it seems clear enough that it must have been removed by some one employed in the studio."