Is Tanner Horner Autistic? Inside His Rocky Childhood, Mother And Ex's Testimony Amid Death Penalty

Tanner Horner, a 34-year-old former FedEx driver, has been sentenced to death for the brutal murder of a seven-year-old. His mother painted a deeply troubling picture of his upbringing.

06 May 2026, 23:45 by Riddhika Das · BollywoodShaadis

The sentencing of former FedEx driver Tanner Horner to death for the murder of seven-year-old Athena Strand has once again pushed the disturbing case back into headlines. But beyond the horrifying details of the crime, the trial also drew intense attention for another reason: Horner’s mental health, autism diagnosis, and the deeply troubling portrait painted by his mother and former girlfriend during court proceedings.

The 34-year-old had pleaded guilty to abducting and killing Athena in 2022 while working as a delivery driver in Texas. Prosecutors argued the murder was deliberate and brutal, while his defense team attempted to avoid the death penalty by highlighting his alleged autism spectrum disorder, traumatic upbringing, and severe mental health struggles.

What did Tanner Horner do?

A Texas jury has sentenced former FedEx driver Tanner Horner to death by lethal injection for the 2022 kidnapping and murder of seven-year-old Athena Strand. Horner pleaded guilty to capital murder at the beginning of the trial on April 7, 2026, and jurors were then left to decide whether he should spend the rest of his life in prison without parole or face the death penalty.

During the trial, prosecutors presented extensive evidence, including an hour-long audio recording captured inside Horner’s delivery van during the incident. According to prosecutors, Horner abducted Athena while delivering packages to her family’s home in Paradise, Texas, in November 2022 before killing her inside his vehicle.

Wise County District Attorney James Stainton described the crime as among the “worst of the worst,” arguing it deserved capital punishment. After roughly two-and-a-half hours of deliberation, the jury returned with a death sentence for the 34-year-old, which will now automatically move to appeal before the Texas Court of Criminal Appeals. However, Horner's family and defense team have urged the court to spare his life, citing his autism diagnosis.

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Does Tanner Horner really belong to the autism spectrum? Here's what the experts have said

The death sentence has raised questions about the 34-year-old allegedly belonging to the autism spectrum disorder. Horner called his alter ego "Zero", who was also allegedly the one to kill Athena Strand. According to Dr. Eric Imhof, a forensic psychologist, Horner met the criteria of generalised anxiety disorder and Bipolar I disorder. As per an updated report by NBCDFW, the analysis was concluded after several tests across over nine hours, including the Autism Diagnostic Observation Schedule (ADOS) and Autism Diagnostic Interview-Revised (ADIR), to see how the subject (Horner) responded to different situations.

Forensic psychiatrist Kim Spence testified to the court that Hornet indeed met the criteria for autism spectrum disorder. According to testimony, Horner had long struggled socially and academically as a child. His mother claimed he found it difficult to connect with others and often felt isolated growing up. While the defense argued that Horner’s mental conditions reduced his "moral blameworthiness," prosecutors maintained that none of those diagnoses excused the crime he committed on the seven-year-old.

Tanner Horner's mother and grandmother described his difficult childhood

Horner's trial has been emotionally heavy on both ends. Both his mother and grandmother spoke about a difficult and traumatic upbringing that may have contributed to the way his social reactions were affected. Horner's mother, Melissa, testified that she was unable to care for him as he grew up due to her own struggles with mental health and substance abuse. Even a more detailed account was given by Horner's grandmother, Jackie, who recalled being a caregiver for Horner during his early years.

Jackie describes Melissa's struggles with paranoia and mood swings from an early age, adding that she often faced difficulties with medications. Melissa was allegedly sexually abused by Jackie's next partner, but she had no idea about it when all three lived together under the same roof, especially as Melissa was just four when it all began.

Horner's mother admitted to using substances before and during her pregnancy with Tanner. She also described repeated rehab stays, arrests, and periods in prison, during which Horner was often cared for by his grandmother. According to her testimony, Tanner once found her unconscious after a drug overdose and believed she had died. She also alleged that Horner’s father raped her the night they met, before the two later married and had children together. She told the court:

"Of course, I love my son. I don't love who did that, though."

What Tanner Horner's ex-girlfriend said about him

Horner’s former girlfriend, identified as Reba, also testified during the sentencing phase. She first dated him during high school and described him as 'sweet and endearing'. Later, the duo reconnected as adults, but that reportedly lasted only a few months. According to Reba, Horner was not interested in building a family and instead wanted a casual relationship while focusing on music.

Reba also recalled becoming increasingly concerned about Horner's mental state after one breakup. She mentioned one particular instance when Horner walked nearly 20 miles to her home seeking answers about their relationship. The defendant does not appear to have any children or a wife.

Where the case stands now

While Horner's autism diagnosis and other mental health conditions were considered in the defense strategy, the Texas jury ultimately sided with prosecutors and sentenced Horner to death after concluding he would continue to pose a danger to society. On May 5, 2026, the court sentenced Horner to death for the kidnapping and murder of Athena Strand. Judge George Gallagher said:

"It's the order of the court that you, Tanner Lynn Horner, have been judged to be guilty of the offense of capital murder as found by the jury. Jury having answered, the special issues make it mandatory that your punishment be death. It is, therefore, the order of this court that your punishment be death."

Currently, the trial is ongoing, and Horner is kept in custody in Texas. No execution date has been scheduled yet.