 As he approaches Fred's body, he is ensnared in a trap similar to the one he used to capture the female; by the time he escapes, the sun is setting and he is attacked by infected dogs.Neville and Sam eliminate them but Sam is bitten during the fight.Neville injects her with a strand of his serum, but when she shows signs of infection, Neville is forced to choke her to death before she turns.