"It is fortunate, Doctor, that the public are in ignorance of the real nature of our work, isn't it, eh? Otherwise, you and I might experience rather rough handling if this house were mobbed."

Weirmarsh smiled grimly. "My dear Gustav," he laughed, "the British public, though of late they've browsed upon the hysterics of the popular Press, are already asleep again. It is not for us to arouse them. We profit by their heavy slumber, and this will be a rude awakening—a shock, depend upon it."

"We were speaking of Sir Hugh Elcombe," remarked the other. "He has been of use to us, eh?"

"Of considerable use, but his usefulness is all but ended," replied the doctor. "He will go to France before long, if he does not act as I direct."

"Into a veritable hornet's nest!" exclaimed the red-bearded man. He recognised a strange expression upon the doctor's face, and added, "Ah, I see. This move is intentional, eh? He has served our purpose, and you now deem it wise that—er—disaster should befall him across the Channel, eh?"

The doctor smiled in the affirmative.

"And the girl you spoke of, Enid Orlebar?"

"The girl will share the same fate as her stepfather," was Weirmarsh's hard response. "We cannot risk betrayal."

"Then she knows something?"

"She may or she may not. In any case, however, she constitutes a danger, a grave danger, that must, at all costs, be removed." And looking into the other's face, he added, "You understand me?"