You grab the gun and check the front door. Its unlocked. You get inside and close and lock the door behind you. There are two zombies in here. You blast one's face apart. The other one you blow off its arm. Grisly shards of bone hang from it as it advances. You blast the last round into its head. Out of bullets now. Fists pound the locked door. You search the place desperately for more bullets. None in the living room. You hear a shuffling footstep coming from the hall leading to the bed rooms. The kitchen sounds free.