What books were you obsessed with as a kid?
I was a morbid kid. Quite frankly, I'm a morbid adult. I write horror / thriller scripts. Love scary books. Adore scary movies (the suspenseful, smart kind; not the gory, ridiculous kind.) So it should surprise no one that this was my favorite book when I was a kid:

To say I read this book 20 times would be a gross understatement. It wasn't simply a ghost story. It also dealt with feelings of abandonment, loneliness, and the upheaval that comes when parents gets remarried and the children on each respective side have to learn to get along with one another. So, not exactly light topics.
I think that's why I loved it, though. I felt like Mary Downing Hahn wrote in a way that made things easy to grasp, while not talking down to me like I was, well, a kid. Plus, it was spooky as heck, and who doesn't love to be scared?