Creep Stepbrother Murders Teen Girl To Hide His Sick Secret Obsession

Anna Kepner was an 18-year-old Florida cheerleader with dreams of joining the Navy. In November 2025, she boarded the Carnival Horizon for a six-day Caribbean cruise with her father, stepmother, 14-year-old brother, and 16-year-old stepbrother. Days into the voyage, her body was discovered wrapped in a blanket and covered with life jackets, hidden under the bed in the cabin she shared with her brothers. Her cause of death was ruled homicide by "mechanical asphyxia." The investigation uncovered a disturbing secret: her stepbrother was allegedly obsessed with her and relentlessly pursued a relationship. An ex-boyfriend's father claimed the teen once climbed on top of Anna while she slept and always carried a large knife, leaving her terrified. The 16-year-old, who reportedly neglected to take his insomnia medication, was the FBI's primary suspect. A younger brother reportedly heard yelling from the locked cabin the night she died. After months of investigation, the stepbrother was formally charged as an adult.