Roger Hunter, a good man, a gentle and peaceful man, had finally seen all he could stomach of Jupiter Equilateral and its company mining policies six months before. He had told them so in plain, simple language when he turned in his resignation. They didn't try to stop him ... a man was still free to quit a job on Mars if he wanted to, even a job with Jupiter Equilateral. But it was an open secret that the big mining outfit had not liked Roger Hunter's way of resigning, taking half a dozen of their first-rate mining engineers with him. There had been veiled threats, rumors of attempts to close the markets to Roger Hunter's ore, in open violation of U.N. Council policies on Mars....

Tom fought the wheel as the big tractor lumbered up another rise, and the huge plastic bubble of Sun Lake City came into view far down the valley below.

He thought of Greg. Had Greg been summoned too? He closed his lips tightly as a wave of anger passed through his mind. If anything had happened, no matter what, he thought, Greg would be there. Taking over and running things, as usual. He thought of the last time he had seen his brother, and then deliberately blocked out the engulfing bitterness.

That had been more than a year ago. Maybe Greg had changed since then.

But somehow, Tom didn't think so.

The Sloppy Joe was on the valley floor now, and ahead the bubble covering the city was drawing closer. The sun was almost gone; lights were appearing inside the plastic shielding. Born and raised on Mars, Tom had seen the teeming cities of Earth only once in his life ... but to him none of the splendors of the Earth cities could match the simple, quiet beauty of this Martian outpost settlement. There had been a time when people had said that Sun Lake City could never be built, that it could never survive if it were, but with each successive year it grew larger and stronger, the headquarters city for the planet that had become the new frontier of Earth.

The radiophone buzzed, and the airlock guard hailed him when he returned the signal. Tom gave his routine ID. He guided the tractor into the lock, waited until pressure and atmosphere rose to normal, and then leaped out of the cab.

Five minutes later he was walking across the lobby of the Interplanetary Council building, stepping into the down elevator. Three flights below he stepped out into the office corridor of the U.N. Interplanetary Council on Mars.

If there was trouble, this was where he would find it.

He paused for a minute before the gray plastic door marked MAJOR FRANK BRIARTON in raised stainless steel letters. Then he pushed open the door and walked into the ante-room.