Nancy Lyon was rushed to the hospital in 1991 by her husband after she is experiencing symptoms of a severe stomach flu and dies that night. Her true cause of death, arsenic, is discovered, and an investigation reveals an unhappy marriage with one of the premier couples of the wealthy Dallas suburb of Park Cities.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.