Cheerleader’s Stepbro Charged with Murder in Cruise Ship Killing: Family

Why It Matters

The involvement of federal prosecutors and a murder charge against a juvenile on a cruise ship raises jurisdictional and legal complexities and could set precedent for how violent crimes in international waters and involving minors are prosecuted. The case also underscores how family custody litigation can surface prosecutorial actions and key evidence.

Summary

Federal court documents reveal that 16-year-old stepbrother TH has been charged with murder in the death of 18-year-old Anna Keaptainner, whose body was found aboard the Carnival Horizon after it returned to Miami in November. The medical examiner ruled Anna’s death a homicide, and family and court filings say her body was discovered in her cabin wrapped under the bed; ABC reporting cites an armbar-style neck compression as the cause. The case is in federal hands because the incident likely occurred in international waters, and details have emerged largely through a separate custody dispute involving Anna’s stepmother. TH is being handled in juvenile court for now, but newly filed federal charges and redacted court filings raise the prospect of escalation.

Original Description

According to newly released court documents, Anna Kepner’s 16-year-old stepbrother has been charged with homicide in connection to her cruise ship death. Kepner was found dead inside her Carnival Horizon cabin in November 2025; a medical examiner claimed she died from asphyxia due to a bar hold. The stepbrother appeared in federal court tin Miami earlier this month. Law&Crime’s Chris Stewart is On the Case.

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Host:

Chris Stewart

Editor:

Curtis Lee-Tai Hosang

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