"Was that wrong, do you think, Mr. Narkom?" queried Ailsa anxiously. "I
feared that if they knew they might lose their heads, and that my
cousins, who are intensely nervous and highly emotional, might hear of
it, and add to our difficulties by becoming hysterical and demanding our
attention at a time when we ought to be giving every moment to watching
for the possible arrival of that man. And as he has always lived up to
the strict letter of his dreadful promises heretofore, I knew that he
was not to be expected before nightfall. Besides, the jewels are locked
up in the safe in Sir Horace's consulting-room, and his assistant, Mr.
Merfroy, has promised not to leave it for one instant before we return."

"Oh, well, that's all right, then. I dare say there is very little
likelihood of our man getting in whilst you and Sir Horace are here, and
taking such a risk as stopping in the house until nightfall to begin his
operations. Still, it was hardly wise, and I should advise hurrying back
as fast as possible and taking at least one servant--the one you feel
least likely to lose his head--into your confidence, Sir Horace, and
putting him on the watch for my men. Otherwise, keep the matter as quiet
as you have done, and look for me about nine o'clock. And rely upon this
as a certainty: the Vanishing Cracksman will never get away with even
one of those jewels if he enters that house to-night, and never get out
of it unshackled!"

With that, he suavely bowed his visitors out and rang up the pick of his
men without an instant's delay.

Promptly at nine o'clock he arrived, as he had promised, at Wyvern
House, and was shown into Sir Horace's consulting-room, where Sir Horace
himself and Miss Lorne were awaiting him, and keeping close watch before
the locked door of a communicating apartment in which sat the six men