Dark Magic and Bookworms

I was at my local library a few days ago, when I came across an ancient tome in the depths of the book sale titled, 'Necromancy' Needless to say, I was curious what secrets lay within, so I purchased it and hurried home. Once there I huddled in the darkest corner, and opened it. As my eyes adjusted to the Darkness I saw a terrible sight. The book had been hollowed out! Now, though, I wonder why that could be. Were the secrets to great for Man to see? Did the very Power of the words eat away the paper? Did someone hide a murder weapon within? I can no longer sleep with such questions racing through my mind.