Bizenghast

Bizengast is a really awesome book. I love the art work, really deatailed. anyways its a story about a girl who sees ghosts. her parents are dead and her aunt thinks she is insane because Dinah has weird fits every time she sees a ghost.
her friend Vincent tries to convince the doctor that its nothing, and he and Dinah leave to walk around for a bit. On their way home something blocked the path that they originally came from so they took a different route home and stumbled upon this huge castle. They go inside and Dinah uses this key and since she did she had to work for the creature there. her and Vincent have to go help troubled souls to move on by going into these weird dreams.