As a matter of fact, she found herself enjoying his companionship more than she intended to. She found herself falling in love with him.

Now this did not suit her at all. Trella had always liked her men tall and dark. She had determined that when she married it would be to a curly-haired six-footer.

She was not at all happy about being so strongly attracted to a man several inches shorter than she. She was particularly unhappy about feeling drawn to a man who was a coward.

The ship that they boarded on Moon Nine was one of the newer ships that could attain a hundred-mile-per-second velocity and take a hyperbolic path to Earth, but it would still require fifty-four days to make the trip. So Trella was delighted to find that the ship was the Cometfire and its skipper was her old friend, dark-eyed, curly-haired Jakdane Gille.

"Jakdane," she said, flirting with him with her eyes as in days gone by, "I need a chaperon this trip, and you're ideal for the job."

"I never thought of myself in quite that light, but maybe I'm getting old," he answered, laughing. "What's your trouble, Trella?"

"I'm in love with that huge chunk of man who came aboard with me, and I'm not sure I ought to be," she confessed. "I may need protection against myself till we get to Earth."

"If it's to keep you out of another fellow's clutches, I'm your man," agreed Jakdane heartily. "I always had a mind to save you for myself. I'll guarantee you won't have a moment alone with him the whole trip."

"You don't have to be that thorough about it," she protested hastily. "I want to get a little enjoyment out of being in love. But if I feel myself weakening too much, I'll holler for help."

The Cometfire swung around great Jupiter in an opening arc and plummeted ever more swiftly toward the tight circles of the inner planets. There were four crew members and three passengers aboard the ship's tiny personnel sphere, and Trella was thrown with Quest almost constantly. She enjoyed every minute of it.

She told him only that she was a messenger, sent out to Ganymede to pick up some important papers and take them back to Earth. She was tempted to tell him what the papers were. Her employer had impressed upon her that her mission was confidential, but surely Dom Blessing could not object to Dr. Mansard's son knowing about it.

All these things had happened before she was born, and she did not know what Dom Blessing's relation to Dr. Mansard had been, but it must have been very close. She knew that Dr. Mansard had invented the surgiscope.

This was an instrument with a three-dimensional screen as its heart. The screen was a cubical frame in which an apparently solid image was built up of an object under an electron microscope.