I read the bulk of Sinner in a day but had to stop several times to calm my heart. My brother was an addict and his choices have tormented nearly 20 years of my life (I am only 27). He and Cole share so many of the same qualities. It was difficult to read this magnified version of him. Painful and scary. What an untidy character: loud, selfish, charming... Cole was very well written and I was really impressed by how you handled his drug addiction and the effect it had, as well as Isabel's role.