L'Adversaire. Book.

I just finished this book. A lot of people where we grew up have read the book because that's where this awful but true story took place back in 1993. At the time, I had just left home to study in Lyon. We all remember it. You can find the english version of the book here. I read the french version, it's really well written, not sure about the english version. More on the story here.