of ultra-wave--anything below ether-level, you know--anywhere in
the whole place. He's got so much stuff that we've never heard of that I
supposed of course he'd have ultra-wave, too; but if he hasn't, that
gives us the edge. Well, Bradley and I've got a lot of work to do....
Wait a minute, I just had a thought. I'll be back in about a second."

There was a brief pause, then the soundless, but clear voice went on:

"Good hunting! That woman that gave you the blue willies isn't
alive--she's full of the prettiest machinery and circuits you ever saw!"

"Oh, Conway!" and the girl's voice broke in an engulfing wave of
thanksgiving and relief. "It was so unutterably horrible, thinking of
what must have happened to her and to others like her!"

"He's running a colossal bluff, I think. He's good, all right, but he
lacks quite a lot of being omnipotent. But don't get too cocky, either.
Plenty has happened to plenty of women here, and men too--and plenty may
happen to us unless we put out a few jets. Keep a stiff upper lip, and
if you want us, yell. 'Bye!"

The silent voice ceased, the watch upon Clio's wrist again became an
unobtrusive timepiece, and Costigan, in his solitary cell far below her
tower room, turned his peculiarly goggled eyes toward other scenes. His
hands, apparently idle in his pockets, manipulated tiny controls; his
keen, highly-trained eyes studied every concealed detail of mechanism of
the great globe. Finally, he took off the goggles and spoke in a low
voice to Bradley, confined in another windowless room across the hall.

"I think I've got dope enough, Captain. I've found out where he put our
armor and guns, and I've located all the main leads, controls, and
generators. There are no ether-walls around us here, but every door is
shielded, and there are guards outside our doors--one to each of us.
They're robots, not men. That makes it harder, since they're undoubtedly
connected direct to Roger's desk and will give an alarm at the first
hint of abnormal performance. We can't do a thing until he leaves his
desk. See that black panel, a little below the cord-switch to the right
of your door? That's the conduit cover. When I give you the word, tear
that off and you'll see one red wire in the cable. It feeds the
shield-generator of your door. Break that wire and join me out in the
hall. Sorry I had only one of these ultra-wave spies, but once we're
together it won't be so bad. Here's what I thought we could