But there wasn’t much to see. It still looked like one of the Bildo-Blocks.

Turning it around, I tried to make out what it was. On the second turn, I saw the faint oblong depression along one side of it—a very shallow depression, almost like a scratch.

I looked at it a little closer and could see that the depression was machined and that within it was a faint red line. I could have sworn the red line flickered just a little. I held it there, studying it, and could detect no further flicker. Either the red had faded or I had been seeing things to start with, for after a few seconds I couldn’t be sure there was any line at all.

I figured it must have been something Bill had picked up or traded for. The kid is more than half pack-rat, but there’s nothing wrong with that, nor with the trading, either, for all that Helen says. It’s just the first signs of good business sense.

I put the block over to one side of the desk and went on with the cheques. The next day, during lunch hour, I bought some more stamps so I could mail them. And off and on, all day, I wondered what could have happened to that sheet of stamps.

I didn’t think at all about the block that had the oily feel.

Possibly I would have forgotten it entirely, except that when I got home, the fountain pen was missing.

I went into the den to get the pen and there the pen was, lying on top of the desk where I’d left it the night before. Not that I remembered leaving it there. But when I saw it there, I remembered having forgotten to put it back into the drawer.

I picked it up. It wasn’t any pen. It felt like a cylinder of cork, but much too heavy to be any kind of cork. Except that it was heavier and smaller, it felt something—somehow—like a fly rod.

Thinking of how a fly rod felt, I gave my hand a twitch, the way you do to cast a line, and suddenly it seemed to be, in fact, a fly rod. It apparently had been telescoped and now it came untelescoped and lengthened out into what might have been a rod. But the funny thing about it was that it went out only about four feet and then disappeared into thin air.