He had been a fool; there was no doubt as to that; the only thing now was how he could best retrieve his folly.  He had walked blindly into a trap, suspecting nothing, confidently relying on his own smartness, believing himself unknown.  Now he must find his way out.  It angered him to realize how easily it had been accomplished; not so much as a blow struck; no opportunity even for him to cry out an alarm—­only that dark cabin, and the threatening revolver shoved against his cheek.  He wondered where McAdams was; perhaps hunting him even then on the pier; and Sexton, what had he succeeded in discovering out at Fairlawn?  That Natalie Coolidge had returned home, no doubt.  At least he no longer believed she was with this yachting party—­evidently there was but one woman on board.  Yet, whether she was there or not, it was clear enough from what he had heard that this sudden voyage of the Seminole had some direct connection with the mystery he was endeavouring to solve.  That was why he had been decoyed aboard, and made prisoner—­to keep him silent; to get him securely out of the way.  Yet this knowledge revealed nothing as to what their real purpose was.

What did they intend doing with him now that he was in their hands?  Joe had declared his fate would be left with Hobart.  Then it must be that they had a rendezvous arranged somewhere with that arch-conspirator, some hidden spot along the lake shore where they were to meet shortly, and divide the spoils, or make further plans.  Hobart unquestionably was the leader of the gang; but who was the woman?  She had evidently been in Mike’s Place the night before, and had a glimpse of his face.  She must have left with that party in the automobile, yet she surely was not the one who had dropped that note begging the police to search this vessel.

What then had become of the other?  If she was being held prisoner, it was not at all probable she had been left somewhere ashore; apparently she had reason to know where she was being taken—­to the Seminole; otherwise she would never have written as she did.  She must have overheard their plans, before she hastily scratched off the note desperately; and yet those plans might have been changed.  However, if so, why were these people—­accomplices of Hobart no doubt—­fleeing in the yacht, seeking to conceal their identity in an effort to disappear?  What were they fleeing from?  Why were they so fearful of discovery by the police?  What would cause them to kidnap him, merely on suspicion that he was a friend of Natalie Coolidge?  The very act was proof positive of the desperation of their crime.  It could be accounted for on no other theory.