So-- the house is full of cobwebs, though I haven't seen a single spider…

... and yeah-- the doors do tend to lock themselves and that window somehow opens itself no matter how many times I've pushed it down…

... and sure-- there's something moving around behind the walls, though I'd be willing to bet it's just a mouse or two...

... but I still maintain that there's nothing going on here that doesn't have a sound scientific and logical explanation.

I don't know why Penny won't believe me that there's no such thing as ghosts! What a silly girl—

--um... What was that noise?