T. Cullen Davis, a Texas oil tycoon acquitted of murder in a shooting at his secluded Fort Worth mansion in a 1970s case featured in true-crime shows and then acquitted again in an alleged murder-for-hire plot, has died. He was 93.

Davis, who always maintained his innocence, died Friday at his home in the Fort Worth suburb of Colleyville, his son Trey Davis said Monday.

In August 1976, Davis and his second wife, Priscilla Davis, were going through a contentious divorce when a gunman dressed in black and wearing a woman's black wig fatally shot two people at the mansion: her daughter Andrea Wilborn, 12, and her live-in boyfriend, Stan Farr, 30.

Priscilla Davis and a visitor to the mansion, Gus “Bubba” Gavrel Jr., were both wounded but survived. Gavrel's date escaped unharmed.

The three survivors identified Cullen Davis as the gunman. He was tried for capital murder in the death of Wilborn.…