Stepbrother Pleads Not Guilty to Charges in Teen's Cruise Ship Death
The 16-year-old stepbrother of Anna Kepner, an 18-year-old found dead on a Carnival cruise ship in November 2025, entered a not guilty plea to federal murder and sexual abuse charges. The plea was filed in Miami federal court on April 21, 2026, ahead of a brief arraignment the next day. The case stems from Kepner's death aboard the Carnival Horizon, ruled as mechanical asphyxiation by authorities.
Substrate placeholder — needs reviewThe stepbrother of Anna Kepner, a 16-year-old defendant, pleaded not guilty to federal charges related to her death, according to a court filing. The plea was submitted on April 21, 2026, waiving his appearance at an arraignment set for April 22, 2026, in Miami federal court.
The proceeding on April 22 lasted less than five minutes, with a judge accepting the plea. The defendant was indicted on April 13, 2026, on charges including murder and aggravated sexual abuse, the U.S. Attorney’s Office for the Southern District of Florida announced.
Prosecutors stated that the defendant sexually assaulted Kepner before killing her, though specific details of the alleged assault were not disclosed. The case was transferred to adult prosecution and unsealed on April 10, 2026.
Kepner, an 18-year-old from central Florida, died on November 7, 2025, aboard the Carnival Horizon during a family vacation. The cruise ship returned to the Port of Miami on November 8, 2025, as scheduled, Carnival stated. The Miami-Dade Medical Examiner’s Office determined the cause of death as mechanical asphyxiation.
The FBI has led the investigation since the incident occurred in international waters. Officials had been investigating the 16-year-old in connection with Kepner's death since November 2025, court documents show. The defendant was arrested in February 2026 and has been staying with an uncle since then.
The stepmother stated in a prior court appearance that her son was hospitalized shortly after the ship returned to Miami on November 8, 2025. He received counseling following his release, though the reason for hospitalization was not specified. The victim's father stated on the day the indictment was made public that justice needs to be served.
He added that the family would continue to speak out to honor Kepner and ensure accountability.
Trip Context Kepner was on the cruise with family members, including her father, stepmother, stepbrother, at least one biological sibling, and another minor child of the stepmother. Reports indicated that Kepner's grandparents were also present. Kepner shared a room with her stepbrother during the trip, according to statements in related court proceedings.
Background Anna Kepner was a high school senior and cheerleader, described in her obituary as bubbly, outgoing, and reliable. She planned to continue cheerleading at the University of Georgia. The obituary stated that she loved her siblings deeply. The family has expressed a commitment to seeking accountability in the case. They aim to ensure the incident is not forgotten through continued public statements.
Transparency
The rewrite presents a neutral, factual account of the court proceedings and incident without slanted language, speculation, or misdirection.
The stepbrother's not guilty plea and pretrial release conditions suggest a presumption of innocence pending full trial evidence.
3 independent outlets report the same core facts. This score blends how many outlets corroborate, their editorial tier, and how closely their facts agree — it measures corroboration, not proof.
Sources framed at 15 → our rewrite 0. We stripped 15 points of framing the sources carried in.
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