For with second thought had come the consideration: Was she not already cleared, was her innocence not already established?

She was prepared to believe that Mrs. Gosnold knew everything. That extraordinary woman! What had she not known, indeed? Mark how cunningly she had drawn from Sally the admission that she had been up and about the house and grounds long after she had gone to her bedchamber for the night--at the very time, most probably, when the robbery was being done! And that had been by way of preface to the pledge she had made Sally of her protection before startling confession from the girl--a pledge not only given in advance, but by implication at least renewed when the truth was out.

If she had believed Sally guilty, or party to the crime, or even in possession of guilty knowledge of it, would she have made that generous promise?

She was kind of heart, was Mrs. Gosnold, but she was nobody's fool; if she had not been well satisfied in her own mind as to the thief she would never have so committed herself to Sally, for she was no one to give her word lightly or, as she herself had said, to bait a trap with fair words and flattery.

In vain Sally searched her memory for anything to warrant an assumption that her mistress had been in any way ignorant of that black business of the small hours. She had neither denied such knowledge nor asserted it, but had simply permitted Sally to leave out of her account all reference to the overnight adventure.

And all that assorted consistently with her statement that she did not wish to learn the thief's identity, as well as with her invention of a means for obtaining restitution without such intelligence.

So Sally ended by believing it rather more than possible that Mrs. Gosnold knew as well as the girl herself who had consummated the crime--or, at all events, shared the damning suspicions engendered in Sally's mind by circumstantial evidence.

Lyttleton, of course: Sally entertained but the slenderest doubts of his black guilt.

If innocent, what had he been carrying hidden in the hollow of his arm? What had he left down there on the beach? Why had he left it there? Why such anxiety to escape observation as to make the man alert to notice Sally's head peering over the parapet of the landing at the head of the cliff? And if he had been employed in no way to be ashamed of, and had no consequences to fear, why that roundabout way up the cliff again and that ambush of his watcher?

And why those signals between window and yacht, if not to apprise the latter that something had been consummated, that the coast was clear for its tender to come in and take away the plunder?