I read "Tweaked" and "All Fall Down" by Nic Sheff before I read this. Know his son's story, everything he went through, and how his son saw his family's struggle gave me a different perspective to this book. There were times in this book I was able to recall what Nic had written about that time in his life, and sort of fill in the blanks. Seeing the fear and despair David Sheff was going through, and knowing exactly that his son was doing at that time (when he had no clue) made everything seem so much more real. For example, knowing details of Nic's relationship with Z and everything he went through, reading about how David turned to Z to find Nic and try to help him was heartbreaking.
I would definitely recommend this book to anyone.