Ten hours between McCann's death and Karpin's departure for Chemisant City. He'd admitted that already. And I was willing to bet he'd spent at least part of that time carrying McCann's body to some other asteroid, one he was sure was nothing but worthless rock. If that were true, it meant the mortal remains of Jafe McCann were now somewhere—anywhere—in the Asteroid Belt. Even if I assumed that the body had been hidden on an asteroid somewhere between here and Chemisant City—which wasn't necessarily so—that wouldn't help at all. The relative positions of planetoids in the Belt just keep on shifting. A small chunk of rock that was between here and Chemisant City a few weeks ago—it could be almost anywhere in the Belt right now.
The body, that was the main item. I'd more or less counted on finding it somehow. At the moment, I couldn't think of any other angle for attacking Karpin's story.
As I clopped morosely back to the dome, I nibbled at Karpin's story in my mind. For instance, why go to Chemisant City? It was closer, he said, but it couldn't have been closer by more than a couple of hours. The way I understood it, Karpin was well-known back on Atronics City—it was the normal base of operations for he and his partner—and he didn't know a soul at Chemisant City. Did it make sense for him to go somewhere he wasn't known after his partner's death, even if it was an hour closer? No, it made a lot more sense for a man in that situation to go where he's known, go someplace where he has friends who'll sympathize with him and help him over the shock of losing a partner of fifteen years' standing, even if going there does mean traveling an hour longer.
And there was always the cash-return form. That was what I was here about in the first place. It just didn't make sense for McCann to have held up his celebration while he filled out a form that he wouldn't be able to mail until he got back to Atronics City. And yet the company's handwriting experts were convinced that it wasn't a forgery, and I could pretty well take their word for it.
Mulling these things over as I tramped back toward the dome, I suddenly heard a distant bell ringing way back in my head. The glimmering of an idea, not an idea yet but just the hint of one. I wasn't sure where it led, or even if it led anywhere at all, but I was going to find out.
Karpin opened the doors for me. By the time I'd stripped off the suit he was back to work. He was cleaning the single unit which was his combination stove and refrigerator and sink and garbage disposal.
I looked around the dome again, and I had to admit that a lot of ingenuity had gone into the manufacture and design of this dome and its contents. The dome itself, when deflated, folded down into an oblong box three feet by one foot by one foot. The lock itself, of course, folded separately, into another box somewhat smaller than that.
As for the gear inside the dome, it was functional and collapsible, and there wasn't a single item there that wasn't needed. There were the two chairs and the two cots and the table, all of them foldaway. There was that fantastic combination job Karpin was cleaning right now, and that had dimensions of four feet by three feet by three feet. The clutter of gear over to the left wasn't as much of a clutter as it looked. There was a Geiger counter, an automatic spectrograph, two atmosphere suits, a torsion densimeter, a core-cutting drill, a few small hammers and picks, two spare air tanks, boxes of food concentrate, a paint tube, a doorless jimmy-john and two small metal boxes about eight inches cube. These last were undoubtedly Karpin's and McCann's pouches, where they kept whatever letters, money, address books or other small bits of possessions they owned. Back of this mound of gear, against the wall, stood the air reconditioner, humming quietly to itself.
In this small enclosed space there was everything a man needed to keep himself alive. Everything except human company. And if you didn't need human company, then you had everything. Just on the other side of that dome, there was a million miles of death, in a million possible ways. On this side of the dome, life was cozy, if somewhat Spartan and very hot.