Miles Otis Miller may seek parole after 40 years under a sentence imposed three years after his mother was found dead.

MISSOULA, Mont. — A Montana man convicted of killing his mother inside the home they shared was sentenced to life in prison, with the possibility of parole after 40 years, as a judge weighed the calculated nature of the killing against the possibility that he could someday be rehabilitated.

Miles Otis Miller, 24, received the sentence Aug. 27 from 4th District Court Judge Leslie Halligan for the May 2023 death of his mother, 68-year-old Taeko “Teri” Miller. A Missoula County jury found him guilty in September 2025 of deliberate homicide and tampering with physical evidence after a three-week trial. The sentence means Miller will remain imprisoned for decades before he can even become eligible to ask for parole. The court also ordered him to pay $2,070 in restitution for funeral expenses and credited him with 1,203 days already served, according to local reporting from the sentencing hearing.

Halligan said the punishment had to account for both public safety and the possibility of rehabilitation. Her decision followed sharply different arguments from prosecutors and the defense. Missoula County Attorney Matt Jennings emphasized evidence that prosecutors said showed planning before the killing and efforts to conceal what had happened afterward. Defense attorney Jami Rebsom focused on Miller’s young age at the time of the crime and argued that a sentence should leave open the possibility that he could change during decades in prison. The resulting sentence did not guarantee Miller any future release; it established the point at which he could first become eligible for parole consideration.

The judge also returned to writings found during the investigation that became central evidence at trial. Prosecutors said notes attributed to Miller included ideas for a cover story, directions about how to respond to investigators and statements suggesting that he had considered killing members of his family. One entry highlighted during the case contained the words “Cover up, no regrets” and proposed an alibi involving a break-in next door. At sentencing, Halligan said the writings showed Miller had considered different ways to kill his mother, weighed choices and at times contemplated killing his sister or his sister’s husband before ultimately targeting Teri Miller. The court described the material as evidence of extensive planning rather than an unexplained, spontaneous attack.

The case began May 13, 2023, when Miller called 911 from the South Avenue home and said his mother was unconscious, covered in blood and not breathing near the bottom of the basement stairs. Firefighters reached the house before police and determined that she was dead. Responding officers reported seeing a substantial amount of blood around her body. They also noticed a bucket containing cleaning supplies and an unused mop nearby. Investigators later said Miller told them he had been asleep, had last seen his mother the previous evening and discovered her after waking around midday. He initially denied knowing what had happened.

Police said the scene quickly raised questions about that account. An officer described blood spatter that appeared to have resulted from force, while investigators noticed scratches and swelling on Miller’s hands. He attributed the condition of his hands to a skin problem that caused cracking and bleeding. After detectives told him they were treating his mother’s death as a homicide, Miller ended the interview and requested an attorney. Investigators obtained warrants to search the house and reported finding blood-stained clothing, items that appeared to have been moved or discarded, a section of carpet that had been cut away and handwritten material that prosecutors later used to argue that the killing and attempted cover-up had been planned.

Early charging documents described approximately 30 stab wounds, along with injuries to Teri Miller’s hands that authorities said were consistent with a struggle. Later proceedings described a larger number of wounds or lacerations. During the post-trial litigation, Miller’s attorneys referred to more than 63 lacerations, while Halligan’s sentencing remarks, as reported by local news outlets, described Miller as stabbing his mother 60 times. Other local coverage has used still different counts. The varying figures emerged at different stages of the case, but the central finding did not change: a jury concluded beyond a reasonable doubt that Miller deliberately killed his mother and then tampered with evidence.

At trial, prosecutors argued that the physical evidence had to be viewed together with Miller’s writings and conduct after the killing. They presented blood-stained clothing and what they described as concealed weapons, and they told jurors that Miller’s DNA was found on clothing containing his mother’s blood. Prosecutors portrayed the notebooks and loose writings as a window into motive, planning and an anticipated response to police. They argued that frustration over inheritance money and resentment toward his mother helped explain the killing. The defense disputed that interpretation, saying the writings were speculative rather than confessions and contending that investigators and prosecutors had overstated the strength of the forensic evidence.

Defense lawyers also attacked the handling of the crime scene and DNA evidence. They argued that investigators failed to fully document parts of the house, that evidence was not always sent to a laboratory promptly and that the prosecution selected only the portions of the evidence that supported its theory. In closing arguments, the defense maintained that the state had failed to establish a reliable timeline for the killing and that DNA testing did not conclusively place Miller as the attacker. Prosecutors responded that the case consisted of hundreds of pieces of evidence that, when considered together, established Miller’s responsibility. After beginning deliberations on Sept. 25, 2025, the jury returned unanimous guilty verdicts the following day.

The dispute continued after the verdict. Before sentencing, Miller’s attorneys sought a new trial, arguing that the evidence was insufficient and raising claims involving a juror, the use of mental-health evidence and alleged prosecutorial misconduct. They also stressed that Miller did not have the injuries they believed would be expected after a prolonged struggle and cited DNA evidence that they said excluded him from portions of the scene. Jennings rejected those claims. He said prosecutors had presented more than 410 pieces of evidence, including Miller’s journals, a suspected murder weapon and evidence involving blood found in a shower. The sentencing ultimately went forward Aug. 27.

Jennings urged the court to impose a severe penalty, arguing that Miller’s writings and conduct showed a continuing danger. At sentencing, the prosecutor also focused on evidence that Miller had hidden and retained a weapon, describing it as being kept like a trophy and arguing that the circumstances reflected what he called an “inherent violence.” Rebsom urged Halligan to consider that Miller was 21 when he was arrested and said he wanted to work while incarcerated. The defense asked the judge to leave him a meaningful prospect of having a life outside prison after serving a lengthy punishment.

Miller remained largely silent during the court proceedings. Prosecutors and members of his family interpreted that silence as an absence of remorse, while his attorney said he was protecting his legal position and maintaining rights that could matter in a future appeal. That distinction was significant because the sentencing hearing occurred after Miller had contested his conviction and after his attorneys had sought a new trial. Halligan did not treat the competing descriptions of his silence as a substitute for the evidence. Instead, she based the sentence on the circumstances of the homicide, the planning reflected in the record, the need to protect the public and Miller’s potential for rehabilitation over a period measured in decades.

The judgment closes the trial-court sentencing phase of a case that began with Miller’s own 911 call more than three years earlier. He now faces life imprisonment and cannot become eligible for parole until he has satisfied the 40-year restriction imposed by Halligan. His defense has indicated that protecting potential appellate rights remains important, meaning further litigation over the conviction may follow. Any future parole consideration would occur only after the restriction is satisfied and would not itself guarantee release.

Author note: Last updated October 17, 2026.