Skeletons in the closet?

In addition to the creepy basement, the door to the attic opens all on its own sometimes. I bought a skeleton key to keep it shut. It works in the lock, but the door lock won't fit in the door frame. I don't believe in ghosts...I don't believe in ghosts...I don't....

Actually, I'm agnostic on ghosts, and I'm pretty sure its the wind that opens the door. Still creepy... but I like old doors and skeleton keys are cool.