I learned an incredible amount about the opioid epidemic, meth and fentanyl, that I didn’t know before, but also about neurology, dopamine, and most importantly, the human spirit. Beautiful writing. Quinones’s language is vibrant and heartpulling, his intellect powerful and his compassion deep. I would definitely listen to this book twice. But I’m now going to listen to his Dreamland. He is an incredible Qualitative researcher and writer if you are looking for an example. The narrator’s voice and read also kept me flipping the audio pages. 5 star.