On this week’s Snapped, a brother killed to protect his sister. Lucille Duncan was convicted of being the mastermind behind her brother (Gerald) shooting and killing her ex-boyfriend (Jimmy). Gerald claimed he was protecting his sister and her son from her abusive ex. Lucille's son Jeremiah was in the car when Lucille’s brother shot Jimmy in the head. Allegedly, Jimmy had made a threat before he was killed. Lucille got life without parole while Gerald, the one who pulled the trigger, got life with parole.
Here are five other cases where people became murderers to protect their family.
1. Leon Gary Plauche, 1984
This was an infamous case that was caught on tape. Plauche was a father who shot and killed a man suspected of abducting and sexually abusing his 11-year-old son. Pluache killed the kidnapper, Jeffrey Doucer, at the Baton Rouge airport. Deputies were escorting a handcuffed Doucet after the FBI arrested him on kidnapping charges. He allegedly brought the boy to California. Plauche pretended to make a call at a payphone and as Doucet and the officers passed, Plauche shot him in the head. The shooting was filmed by a television crew.
Doucet, the son's martial-arts instructor, had sexually abused him for months prior to the shooting. A doctor stated in court, according to the Los Angeles Times, that Plauche "developed a sense of righteous mission directed by what Gary sensed as the voice of Jesus telling him that if he did not kill his son's sexual molester that the man would continue to harm his son and other children."
The judge went easy on Plauche. He was given no jail time and instead was handed five years probation.
2. Texan who killed his daughter’s rapist, 2012
A Texas father discovered a farm worker raping his 5-year-old daughter in a remote barn. His young daughter had gone off toward the barn to feed the family’s chickens. Soon, the dad heard screaming from the barn. When the father found the child being sexually assaulted he killed the rapist, Jesus Mora Flores, 47, with his bare hands.
CNN reported that on a recorded 911 call, the father can be heard crying, and telling the operator, "I need an ambulance. This guy was raping my daughter and I beat him up. And I don't know ... I don't know what to do."
Later in the call, the father said, "The guy's dying on me!"
The father and other family members tried to resuscitate the molester.
The 23-year-old father, whose name was withheld to protect his daughter was never charged for the killing.
3. Stacey Lannert, 1990
[St Louis County Police]
Lannert allegedly shot and killed her father when she was 18 years old to protect her younger sister. She was released from prison in 2009 at the age of 36.
Missouri Gov. Matt Blunt commuted Lannert's life sentence in January after an "exhaustive review of the evidence" in which he determined that Lannert had suffered extensive abuse at the hands of her father, Thomas Lannert. She was released from prison shortly after.
Lannert claimed she killed her father to stop him from abusing her and her younger sister, Christy.
"I wanted him to leave me alone. I wanted him to leave her alone. I didn't really necessarily want him to die, but I didn't want him to be able to ... hurt us again, to be able to get us," Lannert told ABC News in 2002.
Lannert shot her father point blank while he was passed out drunk on the couch,.
Her sister Christy Lannert said she was in first grade when her father started beating her. At age 12 she claimed her father would drink alcohol with her. The more he drank, she said, the more violent he got.
Stacey Lannert claimed that her father started molesting her at age 8 and first raped her at age 9. According to ABC News she said her father continued to rape her over the next nine years, at least once a week.
Six months before the murder Stacey went to live with her mother on the Island of Guam, only to return home after a desperate call from her sister.
"All I really cared about was making sure that Christy never had to go through that pain that I had to go through, ever. I never wanted that for her," Lannert said in an ABC News report. She claimed she begged her father to let her take her sister away, but he told her no. Not long before the murder, Stacey learned that her father had raped Christy too, according to Newsweek.
4. Alonzo Redditt, 2015
[Cook County State’s Attorney’s Office]
Redditt, 21, murdered his sister's boyfriend after receiving a call that she had been beaten.
According to DNA Info, Redditt received a call on Dec. 4, 2015, saying that his sister had been beaten by 23-year-old Lamont Alexander, her boyfriend. Redditt found Alexander, and the men argued in the street. Soon the fight got physical.
Redditt pulled a gun and pistol-whipped Alexander before shooting the man once in his head. He fled and was arrested one block away.
He was charged in 2016 and still faces one count of first-degree murder.
5. Mamadou Diallo, 2016
[NBC New York]
This man fatally beat another man who attempted to rape his wife. According to the New York Daily News, 43-year-old Earl Nash, a criminal with a history of mental health issues and addiction, was caught on surveillance tape trying to rape Nenegale Diallo in her Bronx apartment. She called her 61-year-old husband for help. Mamadou Diallo arrived with a tire iron and beat Nash to death.
“Self-defense,” said Mamadou Diallo as he was led in handcuffs to the police station. “He threatened my wife.”
Nash’s family didn’t want Mamadou Diallo to go to jail for the murder. They wrote, “While we cannot undue the damage that was done that evening, we hope to bring some closure not only to our family but to the Diallo family as well. As such, we wholeheartedly recommend ... dismiss(ing) all charges against Mamadou Diallo.”
The presiding judge agreed and dismissed all charges against the husband.
Crime Time is your destination for true crime stories from around the world, breaking crime news, and information about Oxgen's original true crime shows and documentaries. Sign up for our Crime Time Newsletter and subscribe to our true crime podcast Martinis & Murder for all the best true crime content.