Miami Cruise Ship Tragedy: Anna Kepner Case Moves to Adult Court as Stepbrother Charged With First-Degree Murder.

Miami Cruise Ship Tragedy, Anna Kepner Case Moves to Adult Court as Stepbrother Charged With First-Degree Murder.

MIAMI, Fla. — The U.S. Attorney’s Office has confirmed that the 16-year-old stepbrother of Anna Kepner, 18, has been charged as an adult with first-degree murder and aggravated sexual abuse following the teen’s death aboard the Carnival Horizon cruise ship during a family vacation in November 2025, a case that has shocked South Florida and drawn national attention.

According to federal prosecutors, the stepbrother, identified in court documents as T.H., was indicted by a grand jury after an investigation spanning several months. Authorities allege that between November 6 and 7, 2025, he sexually assaulted and intentionally killed his stepsister while they were aboard the cruise ship. If convicted on both counts, he faces a potential sentence of life in prison and substantial financial penalties.

Court filings show that charges were initially filed in juvenile court in February 2026 before the case was formally transferred to adult federal court. During proceedings in Miami, the defendant appeared in a camouflage hoodie and hat as he was escorted by his attorney, drawing significant public and media attention.

Investigators also referenced details from custody-related court documents, which indicate that Anna Kepner and her stepbrother shared a cruise ship cabin with another sibling while their parents stayed in a separate room nearby. After the ship returned to PortMiami, the teen was reportedly taken to a medical facility, where family members said he expressed confusion and claimed he could not remember what had happened.

Federal prosecutors have since moved to revoke his release conditions, arguing that he poses a danger to the public and should remain in pretrial detention. They contend that his transition from juvenile to adult status changes the legal framework for his release and warrants immediate reconsideration under federal bail standards.

As the case continues through the federal court system, authorities say the investigation remains active, while the family and community await further legal developments in one of Florida’s most closely watched criminal cases.