"There have been other cases," he said reflectively, "now that one considers the matter, which seemed to point to the existence of such a group or society as you indicate, M. Max, notably one with which, if I remember rightly, Inspector"—turning his dark eyes towards Dunbar—"Inspector Weymouth, late of this Branch, was associated?"

"Quite right, sir. It was his big case, and it got him a fine billet as Superintendent in Cairo if you remember?"

"Yes," mused the Assistant Commissioner—"he transferred to Egypt—a very good appointment, as you say. That, again, was before my term of office, but there were a number of very ghastly crimes connected with the case and it was more or less definitely established, I believe, that some extensive secret society did actually exist throughout the East, governed, I fancy, by a Chinaman."

"And from China," added Dunbar.

"Yes, yes, from China as you say, Inspector." He turned to Gaston Max. "Can it really be, M. Max, that we have to deal with an upcrop of some deeply-seated evil which resides in the Far East? Are all these cases, not the work of individual criminal but manifestations of a more sinister, a darker force?"

Gaston Max met his glance and Max's mouth grew very grim.

"I honestly believe so." he answered. "I have believed it for nearly two years—ever since the Grand Duke died. And now, you said, I remember, that you had made a note the nature of which you would communicate."

"Yes," replied the Assistant Commissioner—"a small point, but one which may be worthy of attention. This ray, Dr. Stuart, which played such havoc in your study—do you know of anything approaching to it in more recent scientific devices?"

"Well," said Stuart, "it my be no more than a development of one of several systems, notably of that of the late Henrik Ericksen upon which he was at work at the time of his death."

"Exactly." The Assistant Commissioner smiled in his most
Mephistophelean manner. "Of the late Henrik Ericksen, as you say."