"That is true, but--even when he is like this he would n't do any harm." His throat was still sore from the press of the fellow's fingers, but he nodded politely. Donaldson perceived that she was fighting off a fear. It made the danger seem even more imminent. He had noted with surprise that no servants had appeared. This gave a particularly uncanny atmosphere to the big house, making it look as deserted as though empty of furniture. "We must get him upstairs and into bed," she said. "Will you help him?" The man was choking and writhing upon the floor in his pain. Donaldson stooped and wiped off his eyes. Then he placed his arm about him and half dragged and half carried him up the stairs as she led the way. She preceded them up two flights, switching on the lights at each landing, and entered a small, simply furnished room in the middle of the house,--a room, Donaldson was quick to note, having only a skylight for a window. Here he dashed cold water into the man's face and placed him on the bed. As soon as the pain subsided, Miss Arsdale administered two spoonfuls of a darkish brown medicine which seemed to have instantly a quieting effect. It was the sight of the bottle that again recalled to Donaldson the fact of his own peculiar position in life. Even at the risk of appearing rude, he was forced to look at his watch. It was a few minutes after eleven o'clock. Well, what of it? Had not these hours been full--had he not had more of real living than during the entire last decade? He had faced death twice, he had met a woman, and he now stood at the threshold of a mystery that seemed to demand him. There was no other interest in his life to occupy him--nothing to prevent him from throwing himself heart and soul into the case, lending what aid was possible to this woman. Furthermore, he was clear of all selfish interests; he need bother himself with no queries of what this might be worth to him. But it was worth something, it was worth something to have a woman look at him as this girl had done--with unquestioning trust in a crisis. She glanced up as he replaced his watch. "Oh," she exclaimed, "I must detain you no longer!" "My time is absolutely yours," he reassured her. "I was merely curious to know how old I have grown." She did not understand. "I 'm eleven hours old." Again she did not understand, but in turning to care for her brother