The punishment hearing followed Nolan Stallings’ April guilty plea and ended one defendant’s case while another prosecution remains unresolved.
HOUSTON, Texas — Seven witnesses testified during a 2½-hour sentencing hearing before a Harris County judge ordered Nolan Stallings, 19, to spend 40 years in state prison for seriously injuring an 8-year-old boy who died after several days in critical condition.
The Aug. 17 hearing was not a trial over whether Stallings committed the offense. That question had been settled months earlier, when he pleaded guilty in April to first-degree felony injury to a child causing serious bodily injury. District Judge Michele Oncken was instead deciding punishment. Stallings could have received a sentence as severe as life in prison. The judge ultimately imposed four decades, bringing his prosecution to an end while a related case against the boy’s older sister remains pending.
Court records show the prosecution had assembled substantial material before Stallings entered his plea. Had the case gone to trial, prosecutors were prepared to present crime-scene photographs, hospital records, cellphone evidence, an autopsy report and statements that Stallings and his girlfriend, Kara Walker, gave investigators. The records described a course of abuse lasting several days. Prosecutors alleged Stallings struck the child with his hand and a blunt object, failed to protect him and did not obtain medical treatment soon enough.
The evidence was rooted in what sheriff’s deputies encountered at a hospital rather than at the home where authorities believe the injuries occurred. Deputies were called Feb. 10, 2025, to Houston Methodist Baytown Hospital after an 8-year-old boy arrived with multiple injuries. The child, later identified by his family as Charles Walker, was in critical condition. He survived for five more days before dying Feb. 15, according to medical examiner information reported by the Houston Chronicle.
Investigators soon focused on a residence in the 100 block of Greendell Street in Highlands, east of Houston. The account initially given for Charles’ condition centered on a fall. Local reporting said Stallings told investigators the boy had fallen repeatedly, while the couple told hospital personnel the injuries came from a fall. Medical findings and investigators’ observations did not support that explanation. Authorities said the injuries were consistent with abuse, turning the hospital response into a criminal case.
That contradiction became one of the clearest public threads running through the investigation. Authorities did not need to rely solely on what the adults around Charles said had happened because doctors had treated the boy, investigators could examine his injuries and prosecutors later obtained additional records. The court filings characterized the conduct as prolonged abuse and said the injuries caused the boy’s death. The public reporting does not provide every detail prosecutors intended to present, but it shows the case was built from several kinds of evidence rather than one witness account.
Stallings was arrested in March 2025, weeks after Charles died. He was initially held on a $1 million bond. According to later reporting, he spent about 40 days in jail before securing his release on bond while the case proceeded. His attorneys previously sought a lower bond and emphasized his youth: Stallings was 17 when the February incident occurred and turned 18 shortly afterward. The judge handling that request did not reduce the amount.
The eventual guilty plea altered the role of every piece of evidence prosecutors had collected. Instead of asking a jury to decide whether the state had proved its accusations beyond a reasonable doubt, the case moved toward a punishment decision based on an admitted offense. The available public reports do not contain a full transcript of the seven witnesses who appeared at the sentencing hearing, so the precise content of each person’s testimony cannot be stated reliably. What is documented is the hearing’s length, the number of witnesses and the 40-year sentence Oncken imposed afterward.
The case has another branch that remains legally separate. Kara Walker, Charles’ sister and Stallings’ girlfriend at the time, was arrested Aug. 27, 2025, after investigators continued working the case for more than six months following the boy’s death. She also was charged with injury to a child causing serious bodily injury. Prosecutors alleged that she struck Charles with a blunt object and participated in abuse that extended across several days at the Highlands residence.
Walker has denied the accusations. Speaking from the Harris County Jail after her arrest, she told KPRC that she had not harmed her brother and disputed investigators’ interpretation of information on her cellphone. She said a note investigators found on the device was not written by her and challenged the meaning of text messages referring to her brother being made to stand in a corner. Her parents also publicly defended her. Those denials have not been adjudicated, and they should not be treated as having been either proved or disproved outside court.
The distinction between the two defendants became even sharper after Stallings’ plea and sentence. Stallings is no longer merely accused: he admitted guilt to the felony charge and has been sentenced. Walker’s legal posture is different. She remains entitled to the presumption of innocence, and prosecutors would have to prove the charge against her if the case goes to trial. The Harris County District Attorney’s Office cited that continuing prosecution when it declined to comment in detail after Stallings was sentenced.
The child at the center of the proceedings appears in official records largely through initials and descriptions of injuries, but his family has publicly identified him as Charles Walker. Relatives said the 8-year-old was nicknamed “little man.” His mother, Christian West, remembered him as a child who liked making other people happy. His father, Cecil Walker, said the severity of his son’s injuries had been compared for the family to trauma associated with a high-speed vehicle crash.
Those family descriptions also became part of a wider public disagreement over Walker’s arrest. Her relatives said they did not believe she could have caused Charles’ injuries and continued to support her after she was taken into custody. Prosecutors, meanwhile, alleged in court documents that she had intentionally struck the child. Because her case remains unresolved, neither the family’s defense nor the state’s accusation should be converted into a final finding. Stallings’ guilty plea likewise does not by itself decide Walker’s individual criminal responsibility.
The records reviewed for Stallings’ sentencing leave several questions unanswered. Investigators did not publicly disclose a motive for the prolonged abuse they alleged, and the available reporting does not provide a complete reconstruction of events inside the Greendell Street home. It also does not establish exactly when every injury was inflicted or what each person present at the residence did at every stage. The criminal case instead proceeded on evidence prosecutors said connected Stallings to serious injury, failure to protect and delayed medical treatment.
For Stallings, those questions no longer prevent a final judgment because of his guilty plea. The legal outcome is fixed unless altered through a later court process: a conviction for first-degree felony injury to a child causing serious bodily injury and a 40-year prison sentence imposed by Oncken. His case moved from investigation to arrest, from potential trial to guilty plea, and finally to punishment over roughly 18 months.
The broader case is not fully closed. In the latest reliable reporting reviewed for this article, Walker’s prosecution remained active, and prosecutors declined detailed public comment because of it. No later final disposition of her charge was identified in the sources consulted by Sept. 28. Stallings’ sentencing therefore resolves one defendant’s criminal case while leaving the courts to determine what, if any, responsibility attaches to the second defendant.
Author note: Last updated Sept. 28, 2026.