 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. Mrs. Brown manages to elude Det. Brennan and make her way into the house to arrest the criminal. Det. Brennan follows her, then Martin and Tim. Mrs. Brown, Det. Brennan and Tim are all eventually captured by the criminal. It s up to Martin to save them all. Luckily, after all is said and done, the effects of the pill wear off, and Mrs. Brown reverts back to her old scatterbrain self.