"This button turns it on and this green indicator light glows to let you know it's working." Dad says, pointing. "The transmitter scans through the entire spectrum of frequencies and when it finds the right one, this red light comes on. You then have three seconds to hit this button to lock in the frequency. The person is then under your control." It's the same principle as my transmitter, but not as easy to use or as portable. "Harry set it up so that it never stops on my frequency and I can't accidentally use it on myself." Dad says.

"So what have you been doing with the transmitter, dad?"...