The man convicted of kidnapping and killing seven-year-old Athena Strand in late 2022 had a childhood marked by drug exposure, developmental disorders, and family violence — details that emerged during the penalty phase of Tanner Horner‘s trial as his defense sought to paint a fuller, grimmer picture of who he is and how he got there.
Witnesses called to testify on Horner’s behalf didn’t attempt to excuse what he did. They couldn’t. Instead, they offered a portrait of a boy who, from before he was even born, was dealt a hand that almost nobody would know what to do with. Whether that amounts to mitigation — or simply context — is a question the jury was left to answer.
Before He Was Born
Horner’s mother took the stand and disclosed that she used “anything I could get my hands on” — including heroin, methamphetamine, and alcohol — before discovering she was eight or nine weeks pregnant with him, according to reporting from Fox 4 News. That’s not a minor footnote. Prenatal drug and alcohol exposure is linked to a range of cognitive and behavioral disorders, and researchers have spent decades documenting its long-term neurological consequences.
She also didn’t hold back when it came to her feelings about what her son had done. Emotional on the stand, she called Athena Strand “just a baby” and told the court, “I’m so mad at him. I want to just tear his a– up.” It was a rare moment — a mother simultaneously humanizing her child’s origins and refusing to shield him from moral accountability for his actions.
An Unusual Kid, By Any Measure
What was Tanner Horner like as a small child? Odd, by most accounts. His second cousin, who babysat him regularly as an infant and toddler, described a boy who was largely nonverbal, stood alone in corners, and had a genuinely strange habit of collecting and eating coins. “Eat a lot of coins, change, um, and then he’d poop them out,” she testified, adding that she’d find them at the bottom of the toilet every time she changed him. It’s the kind of detail that lands somewhere between clinical and deeply unsettling — and one that clearly stuck with her decades later.
The same cousin described Horner as different from other kids in ways that went beyond quirky. He was very quiet. He isolated himself. And at times, he’d swing toward hyper-aggression with little apparent warning — a pattern that’s consistent with what his mother would eventually learn was a formal diagnosis.
A Diagnosis, Eventually
After testing at a specialized center, Horner was diagnosed with Asperger’s syndrome. His mother testified that clinicians had initially pointed toward ADHD, but she pushed back. “They kept telling me it was ADHD, but it wasn’t,” she said. It’s a distinction that matters — not because Asperger’s explains violence, because it doesn’t, but because it helps explain why a child might have slipped through so many cracks for so long without proper support or intervention.
Still, a difficult diagnosis is one thing. The environment surrounding it is another. Relatives described Horner’s father as violent, deep into drug addiction, and someone who spent the majority of his adult life in and out of prison — present only intermittently, and apparently not in any constructive way when he was. That’s the backdrop against which a nonverbal, coin-eating, corner-standing little boy was supposed to grow up and figure out how to be a person.
What It All Means — And Doesn’t
None of this brings Athena Strand back. None of it was presented as an excuse, at least not explicitly. Defense teams in capital or high-stakes cases are legally and ethically obligated to present mitigating evidence, and that’s what this was — a structured attempt to show that Horner didn’t emerge from nowhere, that forces were at work long before he ever made the choices that ended a child’s life.
But it’s not that simple, and courtrooms rarely let it be. The same mother who described her own drug use during pregnancy also said she’s furious at her son. The same cousin who remembered the coins in the toilet also remembered a boy who was, by her own description, not like other kids — and not in ways anyone found charming. The testimony humanized Horner without softening what he did, which may have been exactly the point, or may have done neither particularly well.
What lingers, maybe, is something his mother said about Athena Strand — “She was just a baby.” Coming from the woman who gave birth to the man who killed her, it’s a sentence that carries more weight than most.
