to follow this thing to a finish."

"It's a deal," I said. "We'll go until we have to stop."

It was about eight o'clock when we hit the road again.

* * * * *

By nine-forty-five we'd covered something better than two hundred miles,
followed another intersection turn according to the missing spoke, and
were heading well toward the upper right-hand corner of Colorado on the
road map.

At ten o'clock plus a few minutes we came upon the roadsign that pointed
the way to a ranch-type house set prettily on the top of a small knoll
several hundred yards back from the main road. I stopped briefly a few
hundred feet from the lead-in road and asked Miss Farrow:

"What's your telepath range? You've never told me."

She replied instantly, "Intense concentration directed at me is about a
half mile. Superficial thinking that might include me or my personality
as a by-thought about five hundred yards. To pick up a thought that has
nothing to do with me or my interests, not much more than a couple of
hundred feet. Things that are definitely none of my business close down
to forty or fifty feet."

That was about the average for a person with a bit of psi training
either in telepathy or in esper; it matched mine fairly well, excepting
that part about things that were none of my business. She meant
_thoughts_ and not _things_. I had always had a hard time
differentiating between things that were none of my damned business,
although I do find it more difficult to dig the contents of a letter
between two unknown parties at a given distance than it is to dig a
letter written or addressed to a person I know. _Things_ are, by and
large, a lot less personal than thoughts, if I'm saying anything new.

"Well," I told her, "this is it. We're going to go in close enough for
you to take a 'pathic look-around. Keep your mind sensitive. If you dig
any danger, yell out. I'm going to extend my esper as far as I can and
if I suddenly take off like a startled spacecraft, it's because I have
uncovered something disagreeable. But keep your mind on them and not me,
because I'm relying on you to keep posted on their mental angle."

Miss Farrow nodded. "It's hard to remember that other people haven't the
ability to make contact mentally. It's like a normal man talking to a
blind man and referring constantly to visible things because he doesn't
understand. I'll try to remember."

"I'm going to back in," I said. "Then