Annesley was forced to admit, much as she loved Knight, that his daring, original nature (so she called it to herself) might enter into strange adventures and intrigues for sheer joy in taking risks. She imagined that some wild escapade regretted too late might have led him into association with the watchers. Maybe they had all three been members of a secret society, she often told herself, and Knight had left against the others' will, in spite of threats. That would be like him; and brave and splendid as was his image in her heart, she could not say that he would never be guilty of an act which might be classed as unscrupulous. This admission, instead of distressing, calmed her. Allowing that he had certain faults seemed to chase away a dreadful thought which had pressed near, out of sight, yet close as if it stood behind her chair, leaning over her shoulder. For a moment she felt happy again. She would tell Knight what she had heard about the Malindore diamond, and how like its description was to hers. Then, no matter how much he might hate to let it go, he must show the blue diamond ring to Mr. Ruthven Smith and have its identity decided. The girl drew a long breath, and determined to put the subject out of her mind until after dinner, so that Sir Elmer Cartwright need not think her a complete idiot. But the deep sigh that stirred her bosom stirred also the fine gold chain on which hung the blue diamond. The chain lay loosely on her shoulders, lost, or almost lost among soft folds of lace. She wore it like that with a low dress, not only to prevent it from attracting attention and making people wonder what ornament she hid, but also because the thin band of gold, if seen, would break the symmetry of line. It was Knight who had given her this little piece of advice, the first time after their marriage that she had dined with him in evening dress, and since then she had never forgotten to follow it. To-night, however, feeling suddenly conscious of the chain, she was on the point of looking down to make sure that it was shrouded in her laces. Something stopped her. With a quick warning thump of the heart she glanced across at Ruthven Smith. A few minutes ago he had not been wearing his eyeglasses. Now they were on, pinching the high-bridged, thin nose. And he was peering through them at her--peering at her neck, her dress, as if he searched for something. Ruthven Smith knew about the blue diamond. He knew that she wore it on a chain, hidden in her dress. The certainty of this shot through brain and body like forked lightning and seemed to sear her flesh. She was afraid. She could not tell yet of what she was afraid, but when she could disentangle her twisted thoughts one from another the reason would be clear.