“He walked to the front door and opened it. By that time I was on my feet. Both of them were asleep--both my feet, I mean--and I had to stamp them awake. It took me perhaps five seconds, and it hurt like the very mischief. Then I was for creeping up to bed. But as I saw the open front door I was tempted again. I thought perhaps he had had some signal from an accomplice outside--a signal I hadn’t heard. I went toward the door. And at that instant the collie here set up the most awful yowling. I bolted past him up the stairs. As I got to the top I looked back. Macduff was still yowling. And Thax Vail came running into the house to see what ailed the cur.” “Then--” “What I am getting at is that Thax was not out of my sight for more than thirty seconds in all--thirty seconds at the very _most_,” she concluded. “And I leave it to your own common sense if he could have climbed to the window of his room in that time, found and killed Willis Chase in the dark (he carried no flashlight--I saw that through the kneehole of the desk as he went out), climbed down again and gotten into the house--all inside of thirty seconds. He couldn’t. And you know he couldn’t.” CHAPTER XIII HOW ONE OATH WAS TAKEN She glared defiance at the chief, then, in placid triumph, let her eyes roam the circle of faces. The Moselys were wide-eyed with interest. Doris avoided her aunt’s searching gaze. Her own eyes were downcast, her face was working. Clive Creede gave a great sigh as of relief. Vail came forward, lifted one of the little old lady’s hands from the Book and kissed it. He said nothing. It was the chief who broke the brief silence which followed the testimony. “You--you are certain, Miss Gregg, that the time Mr. Vail was out of your sight was not longer than thirty seconds?” he asked, troubled. “I didn’t have a stop watch,” she retorted tartly. “But the time was just long enough for me to stand up, stamp the pringles out of my joints, go to the front hall, and then to run to the top of one short flight of stairs. In that time if he had committed the murder he must have traversed the whole distance around the veranda walk to a spot below his own room, climbed the vines (making sure not to let them rustle loudly), crawl across the roof to the window, wriggle in, locate the bed and the man on it, kill him, and repeat the whole process of getting through the window to the roof and from the roof to the ground and from the ground to the front door. If he could do that in thirty seconds or less he deserves immunity for his speed record.” “He could not have done it in less than several minutes,” said the chief, consideringly. “And if you were out in the front hall for part of that time you couldn’t have failed to hear the rustle of the vines or the steps on the roof. That would cut the time down to even less than the thirty seconds you speak of. No, he could not have done it.”