An empathetic tale of brutal truth which can be seen from a serial killers perspective, It shows two main characters Paul the killer and Sarah the cop, The series shows the obsessions of human kind, different types of obsessions. Those who controlled their obsessions or found a way to legalize them where termed as social and civilized ones i.e Sarah, Burns etc., on the other hand those who broke down and took revenge from the society itself where termed as abnormal or manipulated by bad influence i.e Katie, or the ones who went too far and found a heinous way to satisfy their obsessions i.e Paul. An obsession which he never wanted but was forcefully imposed to him by the structure of the so called civilized society and by his mother herself. In a scene He asks the psychiatrist whether he is treatable for which he got a reply as yes, but when he asked that if he is curable the psychiatrist replied that it's a completely different thing which shows the intensity of harm done to him. The kind of things he had done to people were not at all forgivable but is that makes the rest of them completely exonerated.
It leaves you in the end with a couple of intriguing questions in your mind firstly that whether he alone was completely responsible for the misdeeds he had done or not. He did bad things, things for which he should be punished, If he'd be punished then why not those so called civilized persons be condemned who hide in their shadows doing wrong things only because they can. Each one of them is trying to please themselves by abusing the opposite gender, each one of them are somehow satisfying their rage but the difference is only about what's legal and what's illegal, who's powerful and who's weak.
And the final and most petrifying question remains that when he died, you as an audience felt happy or sad, and if you felt a tinge of sadness about him can you say it out aloud. Or you are also afraid about the social structure which after knowing your soft spot for him will certainly put you either in the place of katie or paul himself..