warning gesture. "Cut it! Here comes Murdock."

Hugh Murdock came straight along the deck toward them, and his sober, clean-cut young face wore a puzzled look as he halted before them.

"Kenniston, there's something about this I can't understand," he declared.

"Yes? What's that?" returned Kenniston guardedly.

He was very much on the alert. Murdock was not a heedless, gullible youngster like the others. He was, Kenniston had learned, an already important official in the Loring Radium company.

From the chaffing the others gave Murdock, it was evident that the young business man had joined the party only because he was in love with Gloria. There was something likeable about the dogged devotion of the sober young man. His very obvious determination to protect Gloria's safety, and his intelligence, made him dangerous in Kenniston's eyes.

"I was down in the hold looking over the equipment you loaded," Hugh Murdock was saying. "You know, the stuff we're to use to dig out the wreck of Dark's ship. And I can't understand it—there's no digging machinery, but simply a lot of cyclotrons, rocket-tubes and spare plates."

Kenniston smiled to cover the alarm he felt. "Don't worry, Murdock, I loaded just the equipment we'll need. You'll see when we reach Vesta."

Murdock persisted. "But I still don't see how that stuff is going to help. It's more like ship-repair stores than anything else."

Kenniston lied hastily. "The cycs are for power-supply, and the rocket-tubes and plates are to build a heavy duty power-hoist to jack the wreck out of the mud. Holk Or and I have got that all figured out."

Murdock frowned as though still unconvinced, but dropped the subject. When he had gone off to join the others, Holk Or glared after him.

"That fellow's too smart for his own good," muttered the Jovian. "He's suspicious. Maybe I'd better see that he meets with an accident."

"No, let him alone," warned Kenniston. "If anything happened to him now, the others would want to turn back. And we're almost to Vesta now."

But worry remained as a shadow in the back of Kenniston's own mind. It still oppressed him hours later when the arbitrary ship's-time had brought the 'night.' Sitting down in the luxurious passenger-cabin over highballs 

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