From that point in the bowels of Greater New York, near the southern tip of Manhattan Island, the mysterious light-beam shot up. It screamed with its weird electrical voice for an hour, so penetrating a sound that it was heard with the unaided ears as far away as Philadelphia. A titan voice it was, shrill as if with triumph. There were millions of people awakened by it this night; awakened and struck with a chill of fear at this nameless siren shrilling its note of danger. The sound gradually subsided; it seemed to reach its peak within a few minutes of the appearance of the light, and within an hour it had ceased.

But the light beam remained. Those who inspected it closely have given a clear description of its aspect; but to this day its real nature has never been determined.

It was a circular beam of about a ten-foot diameter. In color it was vaguely opalescent, rather more brilliant at night than in the day. With the coming of the sun it did not fade, but remained clearly visible, with a spectrum sheen when the sunlight hit it so that it had somewhat the appearance of a titanic, straightened rainbow.

From that contact point with our Earth, the inexplicable beam stood vertically upward. It ate a vertical hole like a chimney up through all the city levels, through the roof and into the sky. It had a tremendous heat, communicable by contact so that it melted the city above it with a clean round hole. But the heat was non-radiant.

I was found lying within fifty feet of the base of the beam. There had been an explosion, so that Molo's metal room was gone; but from where I lay there was only a warmth to be felt from the light.

Halsey's men found me within half an hour. I was unconscious but not injured. I think now that the sound and not the light overcame me. I presently recovered consciousness; for another hour I was blind and deaf, but that quickly wore off. They rushed me through the chaos of the city to the Tappan Headquarters. Grantline was there, but not Snap. I sent them back when once I was fully conscious. They searched all the vicinity at the base of the light. Snap, alive or dead, was not to be found.

Anita and Venza were gone. I had seen Molo and Meka plunge away with them as the light-beam burst forth. They were gone, and Snap was gone.

There was, by now, a turmoil unprecedented throughout all the metropolitan area. The motionless light-beam itself had done little damage, but its appearance brought instant chaos. Within a radius of five miles of its base, the city was plunged into darkness. All power was cut off. Every vehicle, even the aeros passing overhead, and, the ventilating system stopped. Audiphones were wrecked; it subsided within an hour, though, and after that, lights and instruments brought into the area were not affected.

But during that hour, south Manhattan was in panic. A multitude of terrified people awakened in the night to find blackness and that screaming sound. The streets and corridors and traffic levels were jammed with throngs trampling and killing one another in their efforts to escape.

This was in the stricken area; but everywhere else the panic was spreading. Transportation systems were almost all out of commission. The panic spread until by dawn there was a wild exodus of refugees jamming the bridges and viaducts and tunnels, streaming from all the city exits.