get out; for go away they wouldn't.
Not even when, with _poof_ and a yellow flare, the gas tank of one of
the cars exploded. All that happened was that the man in the
snap-brimmed hat and I leaped out, real quick; and then all the cars
went up. But the men didn't leave. And then the guns began to go off
without waiting for anyone to pull the trigger; and the barrels
softened and slumped and spattered to the ground. But the men still
had bare hands, and they stayed.

The Greek got wild--or lost control, it was hard to tell which. There
was a sudden catastrophic _whooshing_ roar and, _wham_, a tree took
flame for roots. A giant old oak, fifty feet tall, I guess it had been
there a couple of centuries, but Greco's demons changed all that; it
took flame and shot whistling into the air, spouting flame and spark
like a Roman candle. Maybe he thought it would scare them. Maybe it
did. But it also made them mad. And they ran, all at once, every one
of them but my personal friend, for the biggest, openest of the
windows--

And leaped back, cursing and yelling, beating out flames on their
clothes.

Jets of flame leaped out of every window and door. The old building
seemed to bulge outward and go _voom_. In half a second, it was a
single leaping tulip of fire.

The firemen got there then, but it was a little late. Oh, they got
Greco out--alive, even. But they didn't save a bit of the laboratory.
It was the third fire in Greco's career, and the most dangerous--for
where previously only a few of the youthing demons had escaped, now
there were vast quantities of both sorts.

It was the end of the world.

I knew it.

* * * * *

You know, I wish I had been right. I spent yesterday with Greco. He's
married now and has a fine young son. They made an attractive family
picture, the two healthy-looking adults, strong-featured, in the prime
of life, and the wee toddler between them.

The only thing is--Greco's the toddler.

He doesn't call himself Greco any more. Would you, the way the world
is now? He has plenty of money stashed away--I do too, of course--not
that money means very much these days. His brain hasn't been affected,
just his body. He was lucky, I guess. Some of the demons hit the brain
in some of their victims and--

Well, it's pretty bad.

Greco got the answer after a while. Both types of demons were loose in
the world, and both, by and by, were in every individual.

But they