He led them, quickly and quietly, along the disused branch of an old drainage system that he had used so often as a private entrance. Presently they dropped to a lower level and the conduit system proper.

When the rains were on, the drains would be running full. Now they were only pumping seepage. They waded in pitch darkness, by-passed a pumping station through a side tunnel once used for cold storage by one of Lhi's cautious business men, and then found steep, slippery steps going up.

"Careful," whispered Campbell. He stopped them on a narrow ledge and stood listening. The Callistan murmured, with faint amusement:

"There is no one beyond."

Antennae over ears. Campbell grinned and found a hidden spring. "Lhi is full of these things," he said. "The boys used to keep their little wars going just for fun, and every smart guy had several bolt holes. Maps used to sell high."

They emerged in a very deep, very dark cellar. It was utterly still. Campbell felt a little sad. He could remember when Martian Mak's was the busiest thieves' market in Lhi, and a man could hear the fighting even here. He smiled bitterly and led the way upstairs.

Presently they looked down on the main gate, the main square, and the slave pens of Lhi. The surrounding streets were empty, the buildings mostly dark. The Coalition had certainly cleaned up when it took over the town. It was horribly depressing.

Campbell pointed. "Reception committee. Tredrick radioed, anyway. One'll get you twenty he followed it up in person."

The gate was floodlighted over a wide area and there were a lot of tough-looking men with heavy-duty needle guns. In this day of anaesthetic charges you could do a lot of effective shooting without doing permanent damage. There were more lights and more men by the slave pens.

Campbell couldn't see much over the high stone walls of the pens. Vague movement, the occasional flash of a brilliant crest. He had known the Kraylens would be there. It was the only place in Lhi where you could imprison a lot of people and be sure of keeping them.