Rick knew that could be done quite simply. The frequencies of the electric current and the brain patterns were so different that they would not interfere with each other.
"He didn't plan to use his machine in Whiteside," Steve went on, "because he left the mind-reading part of the machine in Washington."
"Then why did he bring it?" Barby asked.
"We're not sure. The likeliest possibility is that he wanted to continue using it as a massage machine, because he made a little money with it. I never knew an espionage agent who didn't need money."
Steve looked at Rick. "I'm a little surprised at one thing. Why didn't the Spindrift twins suspect foul play when Hartson Brant ran over something in the speedboat?"
It was Rick's turn to be embarrassed. "I guess we were so upset we didn't think straight. Why?"
"The mainland team found a log. It had a yoke on it. Apparently the houseboaters had taken a lesson from the incident on the pier and were waiting for Spindrift traffic on the water. We think they waited until they heard the sound of the Spindrift speedboat, then took the pram and cut across the course hauling a log on a long rope."
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.