Help me find a - Beautiful in the white

Oh, you beautiful in the white run far, Mr. Law-" "What mean you, Sir Arthur. I admit that it seems almost a miracle to meet you here, but come you one way or the other, you come best without riddles, and still better without threats. Law himself laughed keenly. His face displayed a scorn which jumped ill with the nature of the man before him. I doubt not we shall find my other trinkets in good order not far away.