As I did so, the man who had jumped from behind the curtain suddenly threw down his upraised hands. Before I could fire, instantaneously in fact, I felt a thrill as though a million needles had been thrust into all parts of my body at once paralyzing every muscle and nerve. The gun fell from my nerveless hand, clattering to the floor.

The man had thrown an electric switch which had completed a circuit from the metal mat to the door-knob through my body and then to the light and power current of high power. There I was, held a prisoner, by the electric current!

At the same instant, also, Del Mar with an oath leaped forward and seized Elaine by the arms. I struggled with the door-knob but I could no more let go than I could move my feet off that mat. It was torture.

"Henry!" called Del Mar to the valet.

"Yes, sir."

"Open the cabinet. Give me the helmets and the suits."

The valet did so, bringing out a number of queer looking head-pieces with a single weird eye of glass in the front, as well as rubber suits of an outlandish design. While he was doing so, Del Mar stuffed a handkerchief into Elaine's mouth to keep her quiet.

By this time, Del Mar, as well as the man from behind the curtains and the valet were provided with suits, and one at a time holding Elaine, the others put them on.

Del Mar moved toward Elaine, holding an extra helmet. He strapped it on her, then started to force her into a suit.

I struggled still, but in vain, to free myself from the door-knob and mat. It was more than I could stand, and I sank down, half conscious.