Florida Executes David Joseph Pittman For Killing Wife’s Family In A Bitter Divorce Revenge

Florida Executes David Joseph Pittman For Killing Wife’s Family In A Bitter Divorce Revenge

He earned the death penalty. He was not given the death penalty. He earned it three times. And today, justice occurred. >> On September 17th, 2025, after spending 34 years on death row, David Joseph Pittman was executed by lethal injection at Florida State Prison in Stark, Florida. He was 63-year-old. In this video, we’re going to walk through everything.

His last meal, his final words, and the crime that put him there. A crime so brutal, the prosecutor told the jury that Pittman had, {quote} wiped out an entire family. But before the execution, there was a fight. A legal battle that stretched over three decades. And a question that even one of Florida’s own judges could not shake.

Was the state about to execute a man who was legally ineligible for execution? Stay with me, because this story, from the night of the murders to the moment Pittman took his last breath, is one you need to hear in full. Mulberry, Florida. A small town in Polk County, sitting roughly 40 miles east of Tampa.

Most people there know their neighbors. Most doors were unlocked. Most nights were quiet. May 15th, 1990, was supposed to be one of those quiet nights. It wasn’t. Sometime in the dark hours of that night, someone moved through the shadows toward the home of Clarence and Barbara Knowles. Clarence was 60-years-old.

Barbara was 50. They were a couple, parents. Their 20-year-old daughter, Bonnie, lived with them. Their other daughter, Marie, was going through a divorce. And the man she was divorcing was David Joseph Pittman. Pittman was 28-years-old. The marriage had fallen apart. Marie had filed for divorce and by all accounts, Pittman was not handling it well.

He had already made threats against Marie, against her family. Those closest to the Knowles’ knew something was wrong. They just didn’t know how wrong. That night before Pittman ever touched a door handle, he did something calculated. He cut the phone line to the house. No calls in, no calls out, no help coming. He then entered the home.

What happened next is almost too violent to say plainly, but we’re going to say it because this is what happened. Bonnie Knowles, 20 years old, was stabbed seven times and then her throat was cut. Her mother, Barbara, was stabbed to death. Her father, Clarence, was stabbed to death. When it was over, Pittman set the house on fire.

He then stole Bonnie’s car and later burned that, too. In less than one night, three people who had never been charged with any crime, who had simply raised a daughter and welcomed a son-in-law into their family, were gone. Every single one of them. Polk County Sheriff Grady Judd, who responded to the crime scene 35 years ago, would later say this.

He decided he was just going to wipe out the whole family. Here is what prosecutors laid out clearly and simply. David Pittman was in the middle of a bitter divorce from Marie Knowles. He had made prior threats to the family. On the night of May 15th, 1990, he traveled to the family home. He cut the telephone line deliberately before entering.

He stabbed Bonnie Knowles seven times and cut her throat. He stabbed Barbara Knowles, her mother, to death. He stabbed Clarence Knowles, her father, to death. He set the house on fire. He stole Bonnie’s car and burned it separately in what investigators believed was an attempt to destroy evidence. Three victims, one night, one man.

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A jailhouse informant later testified that Pittman had confessed to the killings from behind bars and had described the events in detail, including that Bonnie had rejected his sexual advances before he attacked her. That testimony, combined with the physical evidence, would become central to the prosecution’s case. Pittman did not disappear.

He was arrested in 1990 following the investigation into the murders in Polk County. The booking photo from that arrest, which has circulated widely in coverage of this case, shows a younger Pittman looking directly into the camera. The evidence against him was significant. The motive was documented, the divorce, the prior threats.

The physical evidence connected him to the scene and the jailhouse informant’s account added another layer. Investigators were not dealing with a case full of uncertainty. They believed they had their man and they moved forward. Pittman was charged with three counts of first-degree murder along with arson and grand theft for stealing and burning the vehicle.

He maintained from the very beginning that he did not do it. That claim, “I am innocent,” would follow him for the next 35 years. The trial took place in 1991, roughly a year after the murders. Prosecutor Hardy Pickard stood before the jury and told them plainly Pittman had, {quote} “wiped out an entire family.

” The defense contested the evidence. They questioned the reliability of the jailhouse informant. They pushed back, but the jury deliberated and they came back guilty. Three counts of first-degree murder, one count of arson, one count of grand theft. Then came the sentencing phase. The jury recommended the death penalty. The vote was nine to three, not unanimous, but enough under Florida law at the time to move forward.

The trial court upheld the recommendation citing several aggravating factors. Among them, Pittman had a prior conviction for aggravated assault and the nature of the crimes themselves, three people in their own home in the middle of the night with the phone line deliberately cut, was considered especially heinous.

He was sentenced to death. He would spend the next 34 years on death row at Florida State Prison. 34 years. That’s how long David Pittman sat on death row and in that time his legal team filed appeal after appeal in state courts, in federal courts. They argued ineffective assistance of counsel. They argued due process violations.

Every appeal was denied, but in 2015, 24 years after his conviction, something changed. Pittman’s attorneys raised a new argument. One that would spark a legal fight that went all the way to the United States Supreme Court. They argued that David Pittman was intellectually disabled and under the US Constitution, specifically the 8th Amendment’s ban on cruel and unusual punishment, executing a person with intellectual disabilities is unconstitutional.

The 2002 Supreme Court ruling in Atkins versus Virginia had already established that clearly you cannot execute someone who is intellectually disabled. Pittman’s lawyers said their client fell into that category. Here is the evidence they presented. IQ scores of 70 and 71, both recorded before Pittman turned 18.

Placement in special education classes throughout his schooling. Documented brain damage consistent with congenital impairment, meaning damage present from birth or early development. A diagnosis of organic personality syndrome, a condition tied to lasting personality and behavioral changes caused by brain injury or medical conditions.

And a childhood that, by any standard, was severe. Physical abuse, sexual abuse, inflicted by his own mother. His attorneys didn’t just argue that Pittman had a low IQ. They argued that everything, the test scores, the school records, the diagnoses, the trauma, painted a consistent picture of a man who had been cognitively impaired his entire life.

They noted that he had trouble reading basic words, that he needed instructions repeated to him multiple times, that he had functioned his whole life at a level significantly below what most people experience. The state of Florida pushed back. Their argument was procedural and it was pointed. Pittman had been filing appeals since 1997.

He did not raise the intellectual disability claim until 2015. That is nearly 13 years after the Supreme Court banned executing the intellectually disabled. The state said, “Too late. Time barred. Procedurally barred.” And the courts, for the most part, agreed. In 2020, the Florida Supreme Court reversed an earlier ruling that had favored defendants like Pittman, deciding that intellectual disability claims could not be applied retroactively under the new legal standards.

That ruling effectively closed the door. The Florida Supreme Court ultimately rejected Pittman’s final appeal in a 6-to-1 decision. Six justices said no. One dissented. Justice Jorge Labarga, the sole dissenting voice, said he believed the claim deserved further review. And perhaps most striking of all, a judge presiding over Pittman’s warrant proceedings acknowledged, on the record, that there was a real risk Florida was killing a man tonight who was lawfully ineligible for execution.

He said that, and then he allowed it to proceed. On August 15th, 2025, Florida Governor Ron DeSantis signed David Pittman’s death warrant. The execution was scheduled for September 17th, 2025, at Florida State Prison in Stark. This was part of a broader pattern in Florida that year. By that point, DeSantis had signed more death warrants in 2025 than any of his predecessors had in a single year, pushing Florida to the front of a national conversation about capital punishment.

Florida had a backlog, more than 300 inmates on death row, and the pace of executions had accelerated sharply. Pittman’s warrant set the execution for 6:00 in the evening. His lawyers immediately went to work. With the warrant signed, Pittman’s legal team made one final push. They filed an emergency petition with the Florida Supreme Court, once again raising the intellectual disability argument.

They argued this wasn’t just a procedural question. It was a constitutional one. The Eighth Amendment doesn’t have an expiration date on who it protects. The Florida Supreme Court denied it 6 to 1. Then they went to the United States Supreme Court on Tuesday, September 16th, 2025, one day before the scheduled execution.

The US Supreme Court denied Pittman’s final appeal. No stay. No reprieve. The execution would proceed. Activists circulated petitions online. They called on Governor DeSantis to intervene. He did not. Outside Florida State Prison, protesters gathered in the hours before the execution. They held a vigil.

They tolled a bell. One said, “None of you are going to wake up tomorrow and be safer because David Pittman is dead.” Inside, preparations continued. September 17th, 2025, Florida State Prison, Starke, Florida. As 6:00 approached, witnesses filed into the viewing area. Among them, Polk County Sheriff Grady Judd, who had driven to Raiford specifically to witness the execution of the man he believed had committed one of the most brutal crimes in Polk County history.

David Joseph Pittman was brought in. He had spent more than half his entire life on death row. Florida’s execution protocol uses a three-drug sequence. First, a sedative to render the person unconscious. Second, a paralytic to stop muscle function. Third, a drug to stop the heart. The procedure began. Witnesses reported that Pittman drew several breaths after the drugs were administered. Then he fell still.

At 6:12 p.m. Eastern time, David Joseph Pittman was pronounced dead. The governor’s office confirmed the execution had been carried out without incident. Before the execution, David Pittman was given the opportunity, as is customary in Florida, to request a final meal. He chose steak, chicken, and biscuits.

That was his last meal on Earth. A quiet, simple request from a man who had spent over three decades in a prison cell. When David Pittman was given the opportunity to speak his final words, he did not hesitate. He looked out at the room, the witnesses, the officials, the sheriff who had come to watch, and he said, “I know you all came to watch an innocent man be murdered by the state of Florida.

I am innocent. I didn’t kill anybody. That’s it.” Those were his last words. Not a goodbye, not a prayer, not an apology, a declaration. He said he was innocent. He had said it for 35 years. He said it one final time in the room where he was about to die. The reaction from law enforcement was immediate and unambiguous.

Polk County Sheriff Grady Judd, who had responded to the crime scene 35 years earlier as an officer, had spent that entire career watching this case move through the courts. He did not mince words. He called Pittman evil in the flesh. He called him vicious, mean, and angry. And then he said something that stayed with people who followed this case.

David Pittman earned the death penalty. He was not given the death penalty. He earned it. No statement from the Knowles family was publicly released. The surviving members of that family, including Marie, the daughter Pitman was divorcing, who outlived her parents and her sister, have lived in the shadow of May 15th, 1990 for 35 years.

David Pitman’s execution didn’t happen in isolation. By September 17th, 2025, Florida had carried out 12 executions in a single year. The most since the state reinstated the death penalty in 1976. His was also the 31st execution in the United States in 2025, a 10-year high. Governor DeSantis had signed only one death warrant in 2024, six in 2023.

But in 2025, the pace accelerated sharply. With DeSantis openly stating his intention to work through Florida’s death row backlog of over 300 inmates. That policy decision placed Florida and cases like David Pitman’s at the center of a national conversation. On one side, families of victims and law enforcement officials who believe justice, however long delayed, was finally served.

Three people walked into their home on May 14th, 1990 and never walked out. Clarence Knowles, Barbara Knowles, Bonnie Knowles, a father, a mother, a daughter. They are the reason this case exists. Whatever your view on the death penalty, whatever your view on intellectual disability and the law, whatever you believe about David Pitman’s guilt or his final declaration of innocence, those three people are the center of this story.

They were killed in the middle of the night in their own home without any ability to call for help. and their family has lived with that for 35 years. I’ll leave you with one question and I genuinely want to know what you think in the comments. When a judge openly acknowledges the possibility that the state may be executing someone illegally, should the execution still be allowed to proceed? I’ll see you in the next one.