DS Pullman decides to reopen one of her old cases involving the death of Nancy Murray in a car crash. Pullman is convinced that Nancy's husband, Stephen, introduced a mechanical fault and was out to get his wife because of an alleged affair she was having. Jack thinks the threats must have come from another woman, while Gerry thinks that she died for a simple reason: she was a woman driver. The team learns that Nancy was seeing a male prostitute twice weekly, and blackmail becomes a real possibility. The solution to the murder, however, is to be found by examining basic human needs and emotions.
