The Invisible Man by H.G. Wells.
I'm using this to fill the "A book I own but never read" category. There have been many adaptations of this on both TV and in the movies but I am pretty sure i have never seen any of them, even the one with Kevin Bacon (Hollow Man). As I understand it, this is about a science experiment gone wrong. Since I mostly read these books at night before I go to bed, hope I don't have nightmares!
Hope you are keeping up with your reading challenge!