At last, after about an hour, she rapped long and low at the window. Gradually the sound penetrated to him. When, in despair, she had ceased to tap, she saw him stir, then lift his face blindly. The labouring of his heart hurt him into consciousness. She rapped imperatively at the window. He started awake. Instantly she saw his fists set and his eyes glare. He had not a grain of physical fear. If it had been twenty burglars, he would have gone blindly for them. He glared round, bewildered, but prepared to fight.