I work at a library, and when someone leaves with items that don't have
cards in them, a loud beeping sound is heard when they reach the exit.
Sometimes the sensor goes off when no one is anywhere near the door; is
this a random occurrence or proof that the library has ghosts...and
they're stealing books? ; )
If you've been to a library that actually is haunted, leave me a comment...I'd love to hear about it!