Confessed child killer Tanner Horner's mother told a packed courtroom she began to notice early on that he was "different" from other kids, Wonderwall.com can report. The distraught mom and other family members have been testifying in the sentencing phase of the former FedEx driver's capital murder case. He's facing either life in prison or the death penalty for kidnapping and murdering 7-year-old Athena Strand in Wise County, Texas, in 2022.