Whoops! It seems as though that mouse was actually also a vampire, and now that he has seen the light of day, has turned to dust.
You poke your head through the little hole in the wall to see what the whole hubbub is all about.
It's just a large room. There's a clown painting beside you, with a note on the floor, and a flask of what looks like burbon. There also are a lot of horns in the corner, all covered in cobwebs.
Now seems like an excellent time to save.