Anna Kepner, 18, was killed while traveling aboard the Carnival Horizon on a six-day vacation with her family.

Former FBI Agent Richard Frankel discusses the homicide ruling in the death of 18-year-old Anna Kepner aboard a Carnival cruise ship.

The death of a Florida teenager on a Carnival cruise ship earlier this month has been ruled a homicide, the latest ...

The death of 18-year-old Anna Kepner has been ruled a homicide, according to a copy of the death certificate issued on Monday and provided to ABC News by Kepner's family.