Brenda finds herself trying to solve the murder of a personal trainer found dead in a parking lot. Since the man had been having an affair with one of his clients, police naturally look to the woman's husband as the likely perpetrator; however, things aren't going well. Brenda is feverish but avoids going to a doctor, most of the squad has to undergo weapons of mass destruction training (leaving only Lt. Provenza free to help out), and the only eye witness to the murder has obsessive-compulsive disorder. A simple mix-up with dates seems to resolve to the crime.