I start with my deep respect to Jyoti Singh - Nirbhaya. No amount of punishment can compensate the evil being done to her.
We all know the case - we all the know the end. And that is where the brilliance of Richie Mehta comes in as the director. He is telling a more or less known story, there is no surprise turn of event or a mystery being revealed at the end but once you are into the series the broody narrative starts sucking you like a black-hole.
In a way it tries to tell you when there is an extreme evil & the banality of evil around, would you or should you have hope of morality. Most of the film gives you a sense of darkness - the night, the dim rooms, there are very few scenes with daylight. In one such daylight scene, when the apparently non-descriptive lady investigating officer takes a firm stand to book the last one caught as juvenile, you face the biggest moral dilemma of whether to side which is legally right or to side which your all other senses are telling you.
Great acting by everybody, even if someone is there for 5 seconds (mother of one the accused, holding her saree in her mouth, looking through the side of curtain, while police takes her son away).
See it & with the last frame through the perspectives of Rasika Duggal, wonder why four others & many others are yet to be hanged?