The soon-to-be high-school graduate's body was found in her cabin while she was on vacation in the Caribbean with her extended family.

Anna Kepner's 16-year-old stepbrother is a suspect in her strangulation death after her body was found on a Carnival Horizon cruise ship on Nov. 8.

Anna Kepner, 18, from Titusville, was found dead of asphyxiation under a bed on a Carnival cruise ship

The soon-to-be high-school graduate's body was found in her cabin while she was on vacation in the Caribbean with her extended family.

Anna Kepner's death has drawn international attention and sparked intense speculation on social media.