Joan Robinson- Hill was a beautiful and talented equestrian. The daughter of wealthy and power Texan oil tycoons and the wife of prominent Houston plastic surgeon, John Hill. When Joan and John's marriage began showing cracks, Joan's father swoops in to help "convince" John he wanted to work things out with Joan.  Then Joan becomes mysteriously ill and ultimately passes away, in March of 1969, as a result of her unknown illness. What happens next is some kind of murder soap opera. Join us in the closet this week for this drama filled story of The Heiress Murder.

Sources: wikipedia.com, nydailynews.com, Investigative Discovery "Behind Mansion Walls" Season 1, Episode 13 (August 2011)

Made for TV Movie "Murder in Texas" Billy Hale Films (1981) staring Farrah Fawcett, Sam Elliott, Katherine Ross, and Andy Griffith