“And now, Simmonds,” said Godfrey, “come along and I’ll show you what started me to watching that house, and caused me to get Lester out here.”

Simmonds followed him up the ladder without a word, and I came along behind.  We were soon on the limb.

“Of course,” Godfrey added, when we were in place, “it is just possible that nothing will happen.  But I think the show will come off as usual.  Look straight out over the trees, Simmonds—­ah!”

High in the heavens that strange star sprang suddenly into being, glowed, brightened, burned steel-blue; then slowly and slowly it floated down, straight down; hovered, burst into a thousand sparks....

And, scarcely able to believe my eyes, I saw standing there against the night two white-robed figures, with arms extended and faces raised; and then they vanished again into the darkness.

For an instant we sat there silent, still staring.  Then Godfrey drew a deep breath.

“I feared so!” he said.  “Miss Vaughan has become a convert!”

And he led the way down the ladder.

CHAPTER XX

CHECKMATE!

I was honestly glad to get back to the office, next morning, for I felt the need of work—­absorbing work—­to take my mind off the problem of Worthington Vaughan’s death, and especially to relieve me from the depression into which his daughter’s inexplicable conduct had plunged me.  When I thought of her, it was with impatience and aversion, for I felt that she had deserted to the enemy and turned her back upon the man who loved her, in the hour of his utmost need.

As I saw it, her conduct was little short of heartless.  She had summoned her lover to her side, and he had come; instantly and without hesitation, without pausing to consider the danger to himself, he had answered her call; in consequence of that high devotion, he was now in prison, charged with a dreadful crime; but, instead of hastening to him, instead of standing by his side and proclaiming to the whole world her belief in his innocence, she deliberately stood aloof.  It was almost as if she herself believed in his guilt!  The world, at least, could draw no other inference.

But she had done more than that.  She had abandoned herself to the fate from which he had tried to save her.  Her presence at Silva’s side could have only one meaning—­she had become his disciple, had accepted his faith, was ready to follow him.  The thought turned me sick at heart, for her as well as for Swain, but for Swain most of all, for he had done nothing to merit such misfortune, while she, at least, had chosen her road and was following it with open eyes.  Small wonder that I thought of her with anger and resentment, yes, and with a vague distrust, for, at the very back of my mind was the suspicion that she had been a decoy to lure Swain to his destruction.

I threw myself feverishly into the work which had accumulated at the office, in order to tear my mind away from thoughts like these; but when Mr. Royce arrived, I had to go over the case with him, and I have seldom seen a man more puzzled or astonished.