It is of necessity that a story such as this should be episodical, lapsical, disconnected. Its inception lies in two countries, and of different people. And it is, in its beginnings, a story of contrasts. So one may be permitted again to say: At a time when pompous, ponderous, white-whiskered, black-suited old Dr. DeLancey was engaged in bringing to the daughter of Kathryn Blair a posthumous baby brother that, in the mystery of things, turned out after all to be a sister, a stranger chanced to be riding at dusk through the deep shades of the Bois du Nord, in Brittany.