Christopher was himself warm-hearted and given to expressing his joyous feelings with engaging frankness. It could hardly have been otherwise, brought up as he had been by a woman of ardent nature and passionate love for him, but in contradiction to this he had learnt to be very silent over the disagreeables of life and to keep his own small troubles to himself, so that he readily entered into Aymer's attitude towards his own misfortune, and the relationship between the two passed from admiration on Christopher's part to passionate devotion, and from the region of experimental interest on Aymer's part to personal uncalculated affection, and to an easing of a sharp heartache he had tried valiantly to hide from his father. Aymer never questioned him on the past, never even alluded to it. Partly because he hoped the memory of it would dwindle from the boy's mind, and partly for his own sake. But Christopher did not forget. There were few days when he did not contrast the old times with the new, and gaze for a moment across the big gulf that separated Christopher Aston from little Jim Hibbault and the quiet woman absorbed in a struggle for existence in an unfriendly world. He occasionally spoke of his mother to Mr. Aston when they were out together, but he kept his implied promise faithfully with regard to Aymer and made no mention of his former experiences, or of his mother, until one day an event occurred which recalled the black terror under whose shadow they had left London, and necessitated an elucidation of knotty points.