Scotty spoke up. "That's what puzzles me, Steve. Why the switch from long-distance electronics to violence?" "When we moved the project to Spindrift, we also removed the chance of taping project members in some natural setting like the barbershop. They had hoped to knock out the team without anyone suspecting it was enemy interference. That worked, at first. But moving the project upset their plans. They rigged the train deal that caught Marks. But even though it worked, it showed we were dealing with an enemy." "So they had to catch the scientists in order to tape them," Scotty commented. "Right. Of course they tried to do it in a way that looked natural in the case of Marks and Dr. Brant. Probably they hoped the attack on Duke, whom they mistook for Morrison, would be taken as a holdup. They undoubtedly planned to allow time between the accident, or attack, and following through with the mind-reading machine, hoping that the two wouldn't be connected." The pattern was clear, Rick thought. Like many such schemes, the moment a suspicion of foul play developed, the plan began to boomerang. "I think the order of events is clear enough," Steve concluded. "Any questions?" Barby had one. "I don't understand about Dr. Marks. Did they turn on the mind reader from the train?" "Probably. The man on the train apparently had a two-section gadget in a suitcase. One part took the EEG and the other sent out the signal that did the damage. He waited until the train was pulling out of the station before turning on the record section. Then all he had to do was get off at New York. We haven't found him, or his machine. But we will. Any other questions?" "Why did the barber move to Whiteside, if he didn't intend to tape anyone?" Weiss asked. "The barbershop in any small town is a good central location for keeping track of goings-on in town. I think that's all he had in mind--besides the fact that barbering was his trade. If Vince Lardner hadn't needed an assistant, he probably would have moved into one of the summer colonies, or gotten some other kind of job. We can't be sure." Rick asked, "Are there any machines in existence besides these two and the missing one from the train?" "We don't know. But it doesn't matter. The enemy now knows we're onto the system and can't expect to get away with it again. Besides, Dr. Winston says a countermeasure is easily arranged, to be used when we suspect the mind readers might make another try." "Who are these people?" Jan demanded. Steve grinned. "Unfriendly agents. Seriously, Jan, we aren't sure about their employers. It will take some backbreaking investigation to get the whole story, because the files show nothing on any of them. That means they were deep-cover agents, kept hidden until there was something important enough to bring them out. We may never get the whole story." "Won't they talk?" Scotty asked.