Anna Kepner's accused murderer has officially entered his plea. We've been following the horrific case for months now - Anna, 18, boarded a Carnival Horizon in November cruise with her blended family, including father Christopher Kepner, stepmother Shauntel Hudson, grandparents, and two younger step siblings. However, she tragically never made it off the ship alive as she was discovered dead in the room she shared with her two younger step siblings.