ould have to arise out of his own efforts.

He folded the note carefully. It would be handy to have if Luise came
back and didn't know who he was.

Meanwhile, the psychologist. Luise hadn't said who he was, but it
shouldn't be difficult to locate him. He went to the screen and dialed
the directory. There were many psychologists in it, but no name that
was familiar.

He pondered. The person who had retroed Luise and himself--what would
he do? First he would take them as far from familiar scenes as he
could. That tied in with the facts. Dorn Starret came from Ceres.

Then what? He would want to make certain that his victims did not
trace their former lives. And he would be inconspicuous in so doing.

Again Luis turned to the screen, but this time he dialed the news
service. He found what he was looking for in the advertisements of an
issue a month old. It was very neat:

DO YOU REMEMBER EVERYTHING--or is your mind hazy? Perhaps my
system can help you recall those little details you find it
so annoying to forget. MEMORY LAB.

That was all. No name. But there was an address. Hurriedly Luis
scanned every succeeding issue. The advertisement was still there.

He was coming closer, very close. The ad was clever; it would attract
the attention of Luise and himself and others like them, and almost no
one else. There was no mention of fees, no claim that it was operated
by a psychologist, nothing that the police would investigate.

Night after night Luise had sat alone; sooner or later, watching the
screen, she had to see the ad. It was intriguing and she had answered
it. Normally, so would he have: but now he was forewarned.

Part of the cleverness was this: that she went of her own volition.
She would have suspected an outright offer of help--but this seemed
harmless. She went to him as she would to anyone in business. A very
clever setup.

But who was behind MEMORY LAB? Luis thought he knew. A trained
psychologist with a legitimate purpose would attach his name to the
advertisement.

Luis patted the retro gun in his pocket. Dorn Starret, criminal, and
inventor of a fictitious memory system, was going to have a visitor.
It wasn't necessary to go to Ceres to see him.

* * * * *

It was the only conclusion that made sense. Dorn Starret had retroed
him--the gun proved that--and Luise as well. Until a few minutes ago,
he had thought that she had been first and he later,