“Yes; but it was a different color from Mr Barry’s. It was a dull green—olive, I think.” “It was after dark when he came, wasn’t it?” “Yes; but the hall was lighted and I saw him clearly. But a man may have two hats, I suppose.” “I haven’t,” said Barry, shortly. “That is, I haven’t two hats that I wear in the afternoon. This is the only soft felt I possess.” The hat he wore was of a medium shade of gray, an inconspicuous soft hat of the latest, but in no way, extreme fashion. “That’s nothing,” Prescott said. “A man can buy and give away a lot of hats in a week. Size him up carefully, Miss Adams; your opinion may mean a lot. Never mind the hat. How does Mr Barry’s size and shape compare with the man you saw?” “Mr Barry is a heavier man,” the lady said, decidedly; “also I feel sure, an older man. The man I saw was slighter and younger.” “Did you see his face?” “No.” “Yet you’re sure he was younger?” “Yes, I am. He was of slighter build, and a little taller, and he walked with a jauntier step, almost a run, as he came up the stairs.” “You are very observant, Miss Adams.” “Not so very. I took him in at a glance, and he impressed me as I have stated. I have a retentive memory, that’s all. I can see him now—as he bounded up the stairs.” “In a merry mood?” “I don’t know as to that. But the impression he gave me was more that of a man in haste. He tapped impatiently at the door of Mr Gleason’s apartment, and when it was not opened instantly, he rapped again.” “And then Mr Gleason opened it?” “Then somebody opened it. I couldn’t see who. The man went in quickly and the door was closed. That’s all I know about it.” Miss Adams sat down then, and folded her hands in her lap. She was quite serene, and apparently not much interested in the matter. A fleeting thought went through the detective’s mind that possibly Barry had interviewed her before and had persuaded or bribed her to say all this. But it seemed improbable. Barry, too, was serene. He seemed satisfied at the turn events had taken, and appeared to think that Miss Adams’ decision had cleared him from suspicion. Not so the detective. “Well, Mr Barry,” he said, “we’ve got to find another man to fit that olive green hat, it appears. But that doesn’t preclude the possibility of your having been here that day, too. You didn’t hang over the balusters all the afternoon, I suppose, Miss Adams.” Offended at his mode of expression, the lady drew herself up haughtily, and said, “I did not.” “But you saw no one come in who might have been Mr Barry?” “No.” “Could he have come and you not have known it?” Miss Adams was about to make a short reply, and then thought better of it.