TMZ.com: Anna Kepner's Stepbrother Raped Her Before Cruise Ship Murder, Feds Say - ANNA KEPNER CRUISE SHIP DEATH FEDS SAY STEP BRO RAPED HER BEFORE MURDER - Disturbing new twist in Anna Kepner's death aboard a Carnival Cruise ... the feds say her 16-year-old stepbrother raped her before murdering her on their family vacation.