"It isn't Mercurian gravity any more," said Bigman, "because the pseudo-grav field snapped to full Earth gravity at a crucial time. Bam! Like that! That's what killed Urteil, not yours truly."

"What made the pseudo-grav snap to Earth levels?" asked Gardoma.

There was silence.

Cook said feebly, "It might have been a short… "

"Nuts," said Bigman, "the level is pulled up. It didn't do that by itself."

There was a new silence and an uneasy one.

One of the technicians cleared his throat and said, "Maybe in the excitement of the fight someone was moving around and shoved it up with his shoulder without even realizing it."

The others agreed eagerly. One of them said, "Space! It just happened!"

Cook said, "I'll have to report the entire incident. Bigman… "

"Well," said the small Martian calmly, "am I under arrest for manslaughter?"

"N-no," said Cook uncertainly. "I won't arrest you, but I have to report, and you may be arrested in the end."

"Uh huh. Well, thanks for the warning." For the first time since returning from the mines, Bigman found himself thinking of Lucky. This, he thought, is a fine peck of trouble for Lucky to find waiting for him when he comes back.

And yet there was an odd stir of excitement in the little Martian, too, for he was sure he could get out of the trouble… and show Lucky a thing or two in the process.

A new voice broke in. "Bigman!"

Everyone looked up. It was Peverale, stepping down the ramp that led from the upper levels. "Great Space, Bigman, are you down there? And Cook?" Then almost pettishly, "What's going on?"

No one seemed to be able to say anything at all. The old astronomer's eyes fell on the prone body of Urteil, and he said with mild surprise, "Is he dead?"

To Bigman's astonishment, Peverale seemed to lose interest in that. He didn't even wait for his question to be answered before turning to Bigman once more.

He said, "Where's Lucky Starr?"

Bigman opened his mouth but nothing came out. Finally, he managed to say weakly, "Why do you ask?"

"Is he still in the mines?"

"Well… "

"Or is he on Sun-side?"

"Well… "

"Great Space, man, is he on Sun-side?"

Bigman said, "I want to know why you're asking."

"Mindes," said Peverale impatiently, "is out in his flitter, patrolling the area covered by Ms cables. He does that sometimes."

"So?"

"So he's either mad or he's correct in saying he's seen Lucky Starr out there."

"Where?" cried Bigman at once.

Dr. Peverale's mouth compressed in disapproval.

"Then he is out there. That's plain enough. Well, your friend Lucky Starr was apparently in some trouble with a mechanical man, a robot-- "

"A robot!"

"And according to Mindes, who has not landed but who is waiting for a party to be sent out, Lucky Starr is dead!"