''Mr. St. John — sitting as still as one of the dusty pictures on the walls, keeping his eyes fixed on the page he perused, and his lips mutely sealed — was easy enough to examine. Had he been a statue instead of a man, he could not have been easier. He was young — perhaps from twenty- eight to thirty — tall, slender; his face riveted the eye; it was like a Greek face, very pure in outline: quite a straight, classic nose; quite an Athenian mouth.'