Or, that was his real dad and the monster is already living in the house with him.

Writing prompt: The monster hires a PR firm.

Monsters these days expect everything handed to them, back in my day they had to pull themselves up by their bootstraps and earn a night on a couch!

I liked From, but it’s basically Lost with night-monsters, and there’s nothing new about monsters/vampires requesting permission to enter

There’s also Philip K. Dick’s classic short story, The Father-Thing.