Two other teens and a 20-year-old man have been arrested and charged with capital murder in connection with the case.
Cullen Davis, a Fort Worth oil tycoon, went on trial in February 1977 in the killings of his ex-wife's daughter and his ex-wife's boyfriend.
Two recent murder-suicides have been ruled a result of domestic violence. FOX 7 Austin's Katie Pratt spoke with a member of the Texas Council on Family Violence about domestic violence and what to ...