He turned and peered again at the white place by the tree. He moved stealthily toward it, and ascertained presently that it was not what it seemed. He rose to his feet and walked rapidly down the path to the Redding house. When he came in sight of it he saw that the kitchen windows were lighted and that a man stood with his arm on the sill of one of them. Silhouetted against the light were the familiar outlines of Stevens Cathcart. As Barnes stood staring amazedly at this, a slender figure in white came to the window, and in the stillness he could hear the quiet voice: "Please let me close the window, Mr. Cathcart. Thank you--no--and good-night." "'Three Men in a Boat,' by Rachel Redding," murmured the doctor to himself, and slipped back to the willow path, from which he at length emerged to join the group upon the porch--which then, it may be observed, held for the first time that night its full complement of men. Three big Chinese lanterns shed a softly pleasant light upon the porch and the lawn at its foot. Suzanne Gerard and Marie Dresser made a most attractive picture, one in a low chair, the other upon a pile of cushions on the step. Suzanne lightly picked a mandolin. Marie was singing softly: "Down through the lane Come I again Seeking, my love, for you; Run to me, dear, Losing all fear, Love and my life will be true." It was one of the songs of the summer--foolish words, seductive music--everybody hummed it half the time. Roger Barnes smiled to himself, remembering where he had heard it last. "Come here and give account," commanded Suzanne the instant he appeared. "Every unmarried man vanished the moment twilight fell. You are the last to show your face. I challenge you, one and all, to swear that you have not been within sight of a certain small brown house at the foot of the hill since supper." Her voice was music; in her eyes was laughter. Marie sang on, pointing her words with smiles at one and another of the culprits. From his seat on the threshold of the door, where his head rested against Juliet's knee as she sat behind him, Anthony laughed to himself. Then he turned his head and whispered to his wife: "Feel the claws through the velvet? Poor boys, they have my sympathy." XVIII.--AN UNKNOWN QUANTITY "Rachel," said Juliet decisively, next morning, "to-night is the last of my house party, and I refuse to let you off. I'm asking ten or twelve more people out from town. You must spend this evening with my guests, or forfeit my friendship." She was smiling as she said it, but her tone was not to be denied.