Can someone please explain to me what this is about and more importantly what the message is? I watched half or most of episode 1 and had to switch it off. It seemed like the viewer was being made to feel sorry for the perpetrator- is this correct? I also didn't really want to watch him repeatedly describing what he'd done to the boy. Everyone is raving about it and I can't find one negative review, so am I wrong in my assumptions having only watched a snippet?