When my mind began to work again, in returning consciousness, I found it to be laden with reproach. How often in the past had we blindly hurled ourselves into just such a trap as this? Should we never learn that, where Fu-Manchu was, impetuosity must prove fatal? On two distinct occasions in the past we had been made the victims of this device, yet although we had had practically conclusive evidence that this studio was used by Dr. Fu-Manchu, we had relied upon its floor being as secure as that of any other studio, we had failed to sound every foot of it ere trusting our weight to its support.... "There is such a divine simplicity in the English mind that one may lay one's plans with mathematical precision, and rely upon the Nayland Smiths and Dr. Petries to play their allotted parts. Excepting two faithful followers, my friends are long since departed. But here, in these vaults which time has overlooked and which are as secret and as serviceable to-day as they were two hundred years ago, I wait patiently, with my trap set, like the spider for the fly!..." To the sound of that taunting voice, I opened my eyes. As I did so I strove to spring upright--only to realize that I was tied fast to a heavy ebony chair inlaid with ivory, and attached by means of two iron brackets to the floor. "Even children learn from experience," continued the unforgettable voice, alternately guttural and sibilant, but always as deliberate as though the speaker were choosing with care words which should perfectly clothe his thoughts. "For 'a burnt child fears the fire,' says your English adage. But Mr. Commissioner Nayland Smith, who enjoys the confidence of the India Office, and who is empowered to control the movements of the Criminal Investigation Department, learns nothing from experience. He is less than a child, since he has twice rashly precipitated himself into a chamber charged with an anaesthetic prepared, by a process of my own, from the _lycoperdon_ or Common Puffball." I became fully master of my senses, and I became fully alive to a stupendous fact. At last it was ended; we were utterly in the power of Dr. Fu Manchu; our race was run.