With her parents still visiting, Brenda investigates the murder of a Chinatown-based tour operator found fatally bludgeoned on one of her tour buses. Her phone messages reveal that she may have been having an affair; it also appears that the tour company was running too much money through its books, leading police to believe that she may have been involved in prostitution. While Brenda works, fiancé Fritz gets stuck playing tour guide for her parents. Brenda has another doctor's appointment, at which she gets some good news but also learns that she'll have to give up a certain dietary crutch.
—garykmcd