The guy you fixed up for me? He owns a share of your next-door neighbor, the Messenger Advertising Service. I fed him a song and dance about needing an office to do some important work, only my very whereabouts had to be secret. The Messenger people were moved out without anybody's knowing. I installed myself there one night, also a simple little electric oscillator.

"Encephalography is damn delicate work; it involves amplifications up to several million. The apparatus misbehaves if you give it a hard look. Naturally, your lab and the machine were heavily shielded, but even so, a radio emitter next door would be bound to throw you off. My main trouble was in lousing you up just a little bit, not enough to make you suspect anything.

"I only worked at that during your calibrating sessions with Sworsky. I didn't have to be there when you turned the beam on him, because it would be calculated from false data and be so far from his pattern as to have no effect. You told me yourself how precise an adjustment was needed. Sworsky played along, then. Now we've got proof—not that you meddled with human lives, but that you are a spy."

Kennedy sat without moving. His voice was a broken mumble. "I was going to change the world. I had hopes for all humankind. And you, for the sake of one woman—"

"I never trusted anybody with a messiah complex. The world is too big to change single-handed; you'd just have bungled it up worse than it already is. A lot of dictators started out as reformers and ended up as mass-executioners; you'd have done the same."

Fraser leaned over his desk. "I'm willing to make a deal, though," he went on. "Your teeth are pulled; there's no point in turning you in. Sworsky and Martinez and I are willing just to report on Bryce, and let you go, if you'll change back all your subjects. We're going to read your files, and watch and see that you do it. Every one."

Kennedy bit his lip. "And the machine—?"

"I don't know. We'll settle that later. Okay, God, here's the phone number of Judy Harkness. Ask her to come over for a special treatment. At once."

A MONTH later, the papers had a story about a plausible maniac who had talked his way into the Columbia University laboratories, where Gavotti's puzzling machine was being studied, and pulled out a hammer and smashed it into ruin before he could be stopped. Taken to jail, he committed suicide in his cell. The name was Kennedy.

Fraser felt vague regret, but it didn't take him long to forget it; he was too busy making plans for his wedding.

THE END