Who Is Hannah Petty on 48 Hours? Everything You Need to Know

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William Riley Gaul entered the Tennessee Department of Correction system immediately after his May 2018 sentencing. In addition to his mandatory life sentence for murder, Judge Bob McGee sentenced him to additional consecutive time for felony stalking and firearm possession. Under current Tennessee statute, Gaul must serve at least 51 full calendar years before becoming eligible to apply for parole in the late 2060s.

The Walker family established the Emma Walker Memorial Fund, partnering with community foundations and regional athletics programs to support nursing scholarships and high school cheerleading teams. They continue to speak publicly at universities and secondary schools regarding teen dating violence, coercive control, and the warning signs of obsessive teenage relationships.

Hannah Petty and the other classmates who stepped forward as state witnesses have largely returned to private lives outside the media spotlight. Their participation in the original 48 Hours broadcast stands as an archival record of teenage courage, showcasing how high school peers recognized anomalous behavior and cooperated transparently with law enforcement to secure accountability.