The joint trial of Johnnie and Michael Miller ended in a split verdict in January 2023: a Taylor County jury convicted the father, Johnnie Miller, of first-degree murder in the shooting death of his Abilene neighbor Aaron Howard and sentenced him to fourteen years in prison, while acquitting his son, Michael Miller, on the same charge. A Texas appeals court upheld the conviction in April 2025.
The Dispute Behind the Shooting
The Millers and Howard lived on the same block of Don Juan Street in west Abilene and shared a dumpster in the alley behind their homes. For months, the households clashed over items in and around the container, especially a mattress that the Millers repeatedly pulled out and Howard repeatedly put back.
On the morning of September 1, 2018, Howard was in the alley unloading scrap metal when he found the mattress moved again. Johnnie Miller, then seventy-two, came out to take out the trash with a handgun tucked into his waistband. His son Michael, then thirty-six, followed with a shotgun. An argument escalated. Howard’s friend Justin Campbell handed Howard a baseball bat, and Howard’s girlfriend, Kara Muntean, began recording on her cellphone. According to trial testimony, Howard advanced on Johnnie Miller with the bat raised, threatening to kill him. Johnnie Miller fired his handgun and hit Howard in the forearm. Howard threw the bat. Michael Miller then fired his shotgun. Howard died at a local hospital from a gunshot wound to the chest.
Both men were charged with first-degree murder and released on $25,000 bond. The case took more than four years to reach trial.
The Trial
The week-long joint trial opened in January 2023 in the 350th District Court, with Judge Thomas Wheeler presiding. Chief Prosecutor Dan Joiner and Assistant District Attorney Erin Stamey handled the case for the state. Justin Sparks of the Sparks Law Firm in Fort Worth, assisted by Ken Sparks, represented both defendants. Eighteen witnesses testified.
The Prosecution’s Case
Prosecutors argued that the Millers walked into an argument over a discarded mattress carrying a handgun and a shotgun, and that Howard was unarmed until the bat was handed to him mid-confrontation. During closing arguments, they displayed the shotgun and pistol to remind jurors that firearms are inherently deadly weapons, and asked whether the bat, in the way Howard used it, was capable of causing serious bodily injury. They emphasized that Howard was roughly six feet away from the Millers when he was shot. “In Texas, everyone matters,” the prosecution told jurors, arguing that a difficult neighbor is not a killable one.
Muntean’s cellphone video was the state’s central exhibit. Joiner later called it a “key factor” that “played a huge part” in the outcome because it offered an objective record rather than relying on witness memory.
The Defense’s Case
The defense argued self-defense under Texas Penal Code sections 9.31 and 9.32, reminding jurors that Texas is a no-retreat state and the Millers had no legal duty to withdraw. Sparks asked the jury to “step into the shoes” of the defendants and staged a courtroom re-enactment of Howard’s advance.
Howard was described in testimony as approximately six feet seven inches tall and 275 pounds. Multiple witnesses and Abilene police officers described him as loud, intimidating, and aggressive; one officer testified to involvement in roughly twenty-seven cases involving Howard. Muntean testified that Howard had been diagnosed with intermittent explosive disorder and was receiving treatment. In the months before the shooting, Howard had reportedly threatened a city code-enforcement officer, fought his brother in the front yard, and chased a mail carrier. The defense urged jurors to weigh the full context, not just the two-minute video clip.
What the Video Showed
The recording captured threats from both sides. Howard threatened to kill the Millers; Johnnie Miller warned Howard to “back off” and said that if he came within three feet, he would kill him. Because Muntean moved during the recording, Howard was out of frame for a significant portion, including the moment he was shot. Both sides worked with that limitation: the prosecution argued the video showed enough, the defense argued it missed the context that mattered.
The Split Verdict and Sentence
On the evening of January 26, 2023, the jury convicted Johnnie Miller of first-degree murder and acquitted Michael Miller. The next morning, after about forty-five minutes of sentencing arguments and roughly three hours of deliberation, the jury sentenced Johnnie Miller to fourteen years in state prison with no fine. The available range was five years to life. Joiner said the jury likely factored in Miller’s age, calling fourteen years “a pretty stiff sentence” for a seventy-two-year-old.
Sparks said the defense was “extremely excited” about Michael Miller’s acquittal and noted the sentence was “substantially less than the 25 that was offered” in a prior plea negotiation, though he maintained that five years would have been more appropriate. Joiner, asked about the acquittal, said: “We wanted justice for Aaron Howard. We believe this is justice.”
Why One Was Convicted and the Other Acquitted
Texas law does not require jurors to explain their reasoning, and neither the jury nor the court did. Sparks credited Michael Miller’s acquittal to jurors hearing “all the evidence, not just a two-minute clip,” suggesting the fuller context persuaded them that the son’s actions were defensible even if the father’s were not.
After the verdict, the defense moved for a judgment of acquittal for Johnnie Miller, arguing the verdicts were legally inconsistent: if Michael was acquitted on a defense-of-a-third-person theory, the jury must have found that Johnnie was acting in lawful self-defense. The trial court denied the motion.
The Appeal
Johnnie Miller appealed to the Court of Appeals of Texas, Eastland, raising three issues: exclusion of testimony about Howard’s prior specific acts of violence, denial of three requested jury instructions, and the inconsistent-verdicts claim. On April 17, 2025, a panel of Chief Justice Bailey and Justices Trotter and Williams affirmed the conviction on all grounds. The court found no abuse of discretion in the evidentiary and instructional rulings and held that a jury may reach different conclusions for co-defendants tried together.
Where Johnnie Miller Is Now
Johnnie Dee Allen Miller is incarcerated at the Allred Unit in the Texas Department of Criminal Justice system. His parole eligibility date is June 16, 2029, and his maximum sentence date is June 16, 2036.