Finally, farthest out, there was Medusa, a hard, cold, rocky world with frozen seas, blinding snow, and mountains broken with the only evidence of vulcanism on the four worlds. There were some forests, but mostly tundra and grasslands. It was an ugly place.

But back on old Earth, man had lived and built in lands at least as bad as Medusa. In the temperate zones people, with a lot of hard work and a lot of time, could even build a civilization there. Still, to want to go to a place like that and make it your home, well—you had to have rocks in your head.

Four worlds, from steaming hell to frozen tundra. Four worlds that still had temperature extremes that could be borne and air and water that could be used. It was incredible. Fantastic. And it was for real.

Not being crazy, the Exploiter Team chose Lilith as its main base, settling in on a beautiful island in a tropical lagoon. After a week or so of preliminary setup, smaller teams were sent out to the other three from Lilith to set up provisional base camps.

Once down, the Exploiter Teams were placed in strict quarantine from the military and all commerce with the Confederacy. It would take at least a year with the team serving as the guinea pigs, poking and probing and testing, before others would set foot on any of the worlds. They had shuttlecraft capable of traveling between the four planets, if need be, and ground and air transportation for their own work, but nothing interstellar. The risk was too great; man had been burned too many times to take any chances.

It took Lilith’s snake about six months to size up the newcomers.

Scientists eventually gave it a long, incomprehensible name, but everybody referred to it as the Warden organism—or, often, as the Warden beast It was a tiny little thing, not really life as we knew it, and so it hadn’t been recognized as such until far too late.