Mrs. Emmeline Lucas was walking briskly and elegantly up and down the cinder path which traversed her kitchen garden and was so conveniently dry underfoot even after heavy rain. This house of hers, called "Grebe," stood some quarter of a mile outside the ancient and enlightened town of Tilling, on its hill away to the west; in front there stretched out the green pasture-land of the marsh, flat and featureless, as far as the line of sand-dunes along the shore. She had spent a busy morning divided ...