Mrs. Brown is more distracted than usual. To help her concentrate, Martin gives her a concentration pill, which will help her focus solely on the first thing she thinks about immediately after taking the pill. However instead of thinking about where she placed a letter for Martin, which is what he originally wanted her to think about, she thinks about police work. She becomes a civilian one-woman police ticket giving machine, for everything from littering to illegal parking. Unfortunately, there are also more dangerous aspects to police work. She buys a short wave radio to monitor police calls, and although Martin tries to watch her every move, he falls asleep while she goes out on a call. The call involves an armed and dangerous criminal holed up in a house.