they soon find that making yourself at home in the devils dollhouse isnt much fun they get a few hints that the deal was indeed too good to be true in the form of black ooze coming from the toilet ; a frenzy of flies ; the kids new invisible playmates ; being woken by nightmares every night at the precise time of the murders ( 3:15 a.m. ) ; and of course , the house angrily yelling at the top of its bellows : get out !