Yeah, taking our clothes was just rude. At least let me have my own pants, house.
The rats were coming from the basement, presumably because their leader is down there. I shit you not - a bunch of girls tried to lead them to the bottomless pit in the house, using the power of music, but they scattered and now they're everywhere.
Because A. no live person was really having much luck with collective clues which meant turning to the dead people and B. the dining room table is a ouija board. And a bunch of folks turned the house upside down looking for a pointer thing so, that generally seemed like a good idea.