 Discovering that the last treatment was successful, Neville assesses the situation as a Darkseeker rams himself against a glass door to break in.Neville draws a vial of blood from the woman he cured and gives it to Anna, before shutting her and Ethan inside a coal chute in the back of the lab.Neville then takes a grenade and kills the Darkseekers at the cost of his own life, saving the cure.