"Here she comes with Myra," said his host. "Name's Eileen."

Dudley smiled at Mrs. Fisher and was introduced to the red-haired girl with her. Eileen eyed him speculatively, then donned her best air of friendliness. The evening passed rapidly.

For the next few days, besides seeing the Fishers and looking up the men who were to be his crew, Dudley spent a lot of time with Eileen. There seemed to be little difficulty about her getting time off from whatever her official duties were. She showed him all the bars and movie theatres and other amusements that the underground city could boast, and Dudley made the most of them in spite of his recent visit to Terra. On the Mars-bound rocket, they would be lucky, if allowed one deck of cards and half a dozen books for the entertainment of the four of them.

It was on the "evening" of his third day that the specter haunting the back of his mind pushed forward to confront him. He had listened for gossip, but there had been no word of the discovery of an unauthorized arrival. Then, as he was taking Eileen to her underground apartment, he heard his name called.

There she was, with an escort of three young men he guessed to be operators of the machinery that still drilled out new corridors in the rock around the city. Somehow she had exchanged the black slack suit for a bright red dress that was even more daring than Eileen's. In the regulated temperature, clothing was generally light, but Dudley's first thought was that this was overdoing a good thing.

"May I have a word with you, Dudley?" Kathi asked, coming across the corridor while her young men waited with shifting feet and displeased looks.

Dudley glanced helplessly at Eileen, wondering about an introduction. He had never bothered to learn her last name, and he had no idea of what name Kathi was using. The redhead had pity on him.

"My door's only a few yards down," she said. "I'll wait."

She swept Kathi with a glance of amused confidence and walked away. It seemed to Dudley that she made sure the three young men followed her with their eyes; but then he was kicking off for Mars within twenty-four hours, so he could hardly object to that.

"Have you changed your mind?" demanded Kathi with a fierce eagerness.