Joe did not hear him, for his thoughts were engrossed with Mabel, the girl who had promised to marry him and who he fondly hoped might be at this moment dreaming of him, as without her knowledge he was speeding toward her. She had been visiting at his father's home as the guest of his sister Clara. Since their trip together around the world the two girls had become almost inseparable, and Mr. and Mrs. Matson already regarded Mabel as a second daughter.