A big Caddo Parish murder-for-hire case will be showcased this weekend in the latest episode of a continuing investigative documentary series.

According to the Caddo District Attorney's Office, the case is the 2013 prosecution of 61-year-old Linda Kate Passaniti, who was convicted in the 2010 slaying of her stepfather, 73-year-old Keithville farmer Ernest Luttrell.

Passaniti was found guilty on all five counts against her in Luttrell's murder. She was sentenced to life in prison as principal to second-degree murder, plus 30 years hard labor for conspiracy to commit second-degree murder, and another 10 years on each of three forgery convictions. Caddo District Judge John Mosely ordered all sentences to be served consecutively.

The DA's Office says Passaniti is the daughter of Luttrell’s common law companion, Loretta Luttrell, who also had been charged in the case, but was found incompetent to stand trial. Two co-conspirators, 50-year-old Tina Marie Vanmoerkerque and 33-year-old Erick Crain, each pleaded guilty to participation in the murder.

The case will be featured on Investigation Discovery this Saturday, October 8, beginning at 8 p.m. The show is titled "Deadly Women, Series 10 Episode 7, Killer In-Laws."

Caddo Parish First Assistant District Attorney Laura Fulco learned about the feature in an email sent this week by Jo Tefler of Beyond International, the Australian production company that put together the episode. A film crew visited Shreveport in late February and spent several hours interviewing Fulco, who at the time was head prosecutor with the DA's office's Section II and served as lead prosecutor in the Luttrell case.

According to Telfer's email, the episode also will look at the August 2012 disappearance 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.

The Investigation Discovery series 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 modern deadlies Karla Faye Tucker and Aileen Wuornos.