On August 2,1976, the most notorious murder in Texas history unfolded in Fort Worth at the Cullen Davis mansion. Cullen and Priscilla Davis were the city's most famous couple because of Priscilla's flamboyance and Cullen's money. But in 1974 Priscilla filed for divorce and she was living in the mansion. On this night, Priscilla's boyfriend, Stan Farr, and her young daughter, Andrea, were murdered by a "man in black." Priscilla and another man were...