Throw the brat Nathan to the zombies
I hated that kid, hated him. Disobedient, impulsive, unapologetic, and so much more. "Nathan stay here, don't move, don't go anywhere!" "Okay mom, I won't because I'm old enough and smart enough to know that something awful is going on like never before and I'm scared. So as soon as you're out of my sight, I'll sneak down, grab a key and let the girl my daddy who loves me locked in a room for no good reason cause I want daddy dead, my brother dead, and you dead mommy, and it was cold up there. I'll stay right here mommy!"
Just like those two rugrats in 28 Weeks Later, everything that happened was his fault. His brother would have allowed the others in and they would have all been safe till the sun came up. Sorry, I hate that kind of kid, and I don't care if you say "lay off, he's just a kid" because he's a selfish, self centered, disobedient, stupid facking kid.
Seems like every horror movie has to have one of those idiots.
Boldly going where most people already have!