[Nigel's House]

"-ater, Little Light."
The silence on the front area breaks down, halfway through the woman saying something. She falls backwards this time, with the syringes and the door promptly closes itself as she goes.
This technically happens before he breaks out the fire, in case he doesn't want to set his door on fire for no reason.

By the time Nigel is halfway through the word "kitchen", the kids are already fleeing in that direction, just in time for another BANG against the back-door.
There's the sound of crunching wood, as something roughly the size of a bear rams the door inwards, fragments of wood streaming wisps of some sort of pink gas. Doors don't usually break apart into weird, mushy chunks like that, but apparently they do today.

Somewhere around the the creature's chest is the lower half of a human head, still speaking the word "SON" over and over again, and the rest looks like what would happen if you skinned a gorilla and a bear, slapping their heads and arms onto the frame of an enormous, ugly purple spider.

This abomination against biology wastes absolutely no momentum from its door shattering, charging deeper into the house and presumably directly towards Nigel.