 The Others ' leader Ben Linus ( Michael Emerson ) orders ten of the Others to go to the survivors ' camp to kidnap any pregnant women that night — a night earlier than was scheduled . Ben 's adopted daughter Alex ( Tania Raymonde ) persuades her boyfriend Karl ( Blake Bashoff ) to canoe to the survivors ' beach to warn them . The survivors ' leader Jack Shephard ( Matthew Fox ) plans to kill the ambushing Others with dynamite retrieved by island resident Danielle Rousseau ( Mira Furlan ) . Sayid Jarrah ( Naveen Andrews ) , Jin Kwon ( Daniel Dae Kim ) and Bernard Nadler ( Sam Anderson ) are selected to stay behind to shoot the dynamite @-@ rigged tents when the Others arrive . 
