A powerful series that is brilliant in its twists and turns and the level of sustained tension right through. Actors are fantastic in that even the lack of expression on the faces of the main characters, portrays a lot of emotion. I read one review that said there's no understanding of what prison is about, but thats not the point for me. I see it as the writer and director using free license of a prison setting, to portray a powerful story of us as humans, and how even those with the best of morals or intentions, have vulnerabilities or weak spots that can be exploited or manipulated. It is honest, daring, and punchy. I loved it!