Ainsley MacGregor, a former criminologist from Chicago, decides to make a radical change in her life and returns to the quiet Texas town of Sweet River to open an art store. She also begins teaching criminology at a local college. Her quiet life is shattered when a murder occurs at her best friend's winery, and the prime suspect is her friend's husband. Despite her brother, a sheriff, urging her to stay out of the investigation, Ainsley uses her professional skills and the help of her book club to find the real killer.