Ernest Luttrell, 73, was killed in 2010. His stepdaughter Linda Kate Keeney Passaniti was convicted 3 years later.
"Killer In-laws," episode 7 in series 10 of "Deadly Women," will be shown at 8 p.m. Central on the Investigation Discovery Channel.
Caddo First Assistant District Attorney Laura Wingate Fulco was notified of the airing in an email this week from Jo Telfer, of Beyond International.
A film crew from the Australian production company visited Shreveport in late February. Interviewer/producer Catherine Ledingham, videographer Peter Heap and sound engineer Bronson Wilson spent several hours interviewing Fulco, who was lead prosecutor on the case and at the time was head prosecutor for Section II of the Caddo district attorney's office.
Passaniti, 61, was found guilty May 5, 2013, on all five counts against her. She then was sentenced to life in prison as a principal to second-degree murder, plus 30 years at hard labor on a charge of conspiracy to commit second-degree murder and another 10 years on each of three forgery convictions. Caddo District Judge John Mosely ordered Passaniti to serve all 5 sentences consecutively.
Passaniti is the daughter of Luttrell’s common-law companion, Loretta Luttrell, who also was charged in the case but was found incompetent to stand trial. Co-conspirators Tina Marie Vanmoerkerque, 50, and Erick Crain, 33, pleaded guilty to participating in the slaying.
"Deadly Women" explores celebrated murder trials in which the perpetrators were female. Killers profiled have ranged from such historic figures as Lizzie Borden and Caril Fugate to contemporaries Karla Faye Tucker and Aileen Wuornos.
Telfer's email says the Oct. 8 episode of the Investigation Discovery series also will look at the disappearance in August 2012 of Canadian banker Rajvinder Kaur Gill and Indiana housewife Opal Collins, who was sentenced to death in 1956 for the murders of her husband, his mother and two of his sisters. Her sentence later was reduced to life in prison by Gov. George Craig.