OUTPOST ON IO

By LEIGH BRACKETT

In a crystalline death lay the only release for those prisoners of that Ionian hell-outpost. Yet MacVickers and the men had to escape—for to remain meant the conquering of the Solar System by the inhuman Europans.

[Transcriber's Note: This etext was produced from Planet Stories Winter 1942. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.]

MacVickers stopped at the brink of the dark round shaft.

It was cold, and he was stark naked except for the silver collar welded around his neck. But it was more than cold that made him shiver and clamp his long bony jaw.

He didn't know what the shaft was for, or where it led. But he had a sudden feeling that once he went down he was down for good.

The small, round metal platform rocked uneasily under his feet. Beyond the railing, as far as MacVickers could see to the short curve of Io's horizon, there was mud. Thin, slimy blue-green mud.

The shaft went down under the mud. MacVickers looked at it. He licked dry lips, and his grey-green eyes, narrow and hot in his gaunt dark face, flashed a desperate look at the small flyer from which he had just been taken.

It bobbed on the heaving mud, mocking him. The eight-foot Europan guard standing between it and MacVickers made a slow weaving motion with his tentacles.

MacVickers studied the Europan with the hating eyes of a wolf in a trap. His smooth black body had a dull sheen of red under the Jupiter-light. There was no back nor front to him, no face. Only the four long rubbery legs, the roundish body, and the tentacles in a waving crown above.

MacVickers bared white, uneven teeth. His big bony fists clenched. He took one step toward the Europan.

A tentacle flicked out, daintily, and touched the silver collar at the Earthman's throat. Raw electric current, generated in the Europan's body, struck into him, a shuddering, blinding agony surging down his spine.

He stumbled backward, and his foot went off into emptiness. He twisted blindly, catching the opposite side of the shaft, and hung there, groping with his foot for the ladder rungs, cursing in a harsh, toneless voice.

The tentacle struck 

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