 Shannon Rutherford was a fictional character played by Maggie Grace on the ABC drama television series Lost , which chronicled the lives of the survivors of a plane crash in the South Pacific . Shannon was introduced in the pilot episode as the stepsister of fellow crash survivor Boone Carlyle ( Ian Somerhalder ) . She was a series regular until her funeral in " What Kate Did " . For most of her time on the Island , she was unhelpful and spent much of her time sunbathing . She formed a relationship with another survivor from the plane crash , Sayid Jarrah ( Naveen Andrews ) . Shannon was accidentally shot by Ana Lucia Cortez who mistakes her for an Other . 
