Defense Witnesses Focus on Mental Health, Work History, and Mitigation

Day 14 of the Tanner Horner trial kept the jury focused on one question: whether Horner should be sentenced to death or life in prison without parole for the abduction and killing of 7-year-old Athena Strand. Horner has already pleaded guilty to capital murder and aggravated kidnapping, so the punishment phase is now centered on aggravating evidence from the state and mitigation evidence from the defense.

Dr. Eileen Ryan Returns for Cross-Examination

The day began with prosecutors continuing their cross-examination of Dr. Eileen Ryan, the psychiatrist who evaluated Horner while he was in jail. Ryan had previously testified about Horner’s mental health history and diagnoses, including autism, PTSD, severe depression, and ADHD.

On cross, prosecutors pressed Ryan about Horner’s credibility, including his claim that Athena saw him using cocaine before he put her in the delivery truck. Ryan testified that the explanation fit with other information she reviewed, but prosecutors emphasized that there was no outside proof supporting that claim. When asked whether she knew it was not “another lie,” Ryan answered, “No.”

Prosecutors also challenged Ryan’s opinion that cocaine intoxication and impaired problem-solving contributed to Horner’s actions. They argued that his conduct after Athena’s death, including efforts to mislead investigators and clean the truck, showed he was still capable of solving problems. Ryan disagreed with the prosecution’s framing, saying she did not believe his problem-solving was working normally, but that he was “solving problems as he saw fit.”

Friends and Coworkers Describe Horner’s Behavior

After Ryan’s testimony, the defense called a woman named Elizabeth, who said she had known Horner for about five or six years and was friends with his ex-girlfriend. She described Horner as socially awkward and easily distracted because of ADHD.

A former coworker named Lee also testified. He worked with Horner at a glass installation business and described him as “just a little different.” Lee said Horner sometimes struggled with jokes, lacked common sense, and had trouble retaining information. He also described an incident where Horner became upset after misplacing equipment and slapped himself in the head.

The defense also called Jason, a FedEx contractor who had been Horner’s boss. Jason testified that Horner was often late but usually completed his deliveries on time. He also said route changes were common during the holiday season or when drivers were covering for others. Jason told jurors he once loaned Horner $1,100 because Horner was a new father and was struggling financially.

Jail Witness Testifies About Horner in Custody

Jurors also heard from a convicted felon housed near Horner in jail. The witness testified that Horner was slow to understand what was happening around him and said he had tried to teach Horner how not to be taken advantage of in prison.

That testimony fit into the defense argument that Horner would not be a future danger in a structured prison setting. Prosecutors, however, have continued to argue that Horner’s actions during and after Athena’s killing show he remains a continuing threat.

Fetal Alcohol Specialist Takes the Stand

The defense then called Dr. Julian Davies, a pediatrician who specializes in fetal alcohol spectrum disorders. Davies testified about the risks of alcohol exposure during pregnancy, especially in the first trimester. He said Horner had high-risk prenatal alcohol exposure because Horner’s mother drank heavily until she learned she was pregnant at about eight or nine weeks.

Davies also testified that marijuana use during pregnancy can increase the risk of ADHD and antisocial behaviors, and that Horner’s mother had said she used marijuana while pregnant because it helped with morning sickness. On cross-examination, Davies said Horner does not have fetal alcohol syndrome. Instead, he diagnosed Horner with fetal alcohol spectrum disorder, which he described as involving a lower level of confirmed brain dysfunction.

Doctor Testifies About Testosterone Levels

The final witness of the day was Dr. Steven Yount, a doctor of osteopathy with a family practice in Bastrop, Texas. Yount testified about a physical examination of Horner that included blood and urine testing. He noted significant abnormalities in Horner’s testosterone levels.

The testimony added another medical layer to the defense mitigation case, which has focused on Horner’s developmental history, mental health, prenatal exposure, physical health, and ability to function in structured environments.

Where Day 14 Leaves the Case

By the end of Day 14, the defense had continued building its case that Horner’s life should be spared because of his mental health, developmental history, and personal background. The testimony moved between expert opinions, workplace observations, jail behavior, and medical findings.

The state’s cross-examination kept returning to the same core point: whether those conditions explain anything about Horner’s decisions during and after Athena’s abduction and killing. Prosecutors questioned Ryan about Horner’s repeated lies and challenged the cocaine explanation because it depends on Horner’s own account.

Jurors were dismissed for the day, with testimony expected to resume the next morning. The central issue remains unchanged: whether the jury finds Horner to be a continuing threat and whether any mitigating evidence is strong enough to warrant life in prison without parole instead of a death sentence.