I started this show bcoz the Drama Name was quite unusual which usually turns out to be the most amazing drama and I can bet this show is definitely the #showoftheyear2020 with a great and deep message. I m so glad i watched this out of random searching about thriller shows. Kudos to the whole Team and Cast of NOBODY KNOWS.
Usually in a crime thriller show which is based on a serial killing keeps revolving around the murders only and everything is directly related to it but this show really did a SPLENDID/MIND-BLOWING job in connecting the whole murder story through other characters, Specially relating it with KEH the one who is so closed to CYJ.
All the characters are so well written and the Cast really portrayed it so amazingly, Hats off to them.
Everything is so good about this show, the bond between CYJ and KEH, BSH madness & his accomplice , SSW who is Blinded by his superstitious belief, Mr Hwang's care and generosity, support from CYJ team, KEH relationship with his frndz and LSW trust and care for CYJ & KEH.

I always believe that a child's future can be shaped by the person who brought him/her up be it a parent or any guardian that's the reason when a kid makes a mistake the parents/guardian are the one who gets the blame for not teaching their kids properly but i also believe that with maturity the kidz become responsible to understand and realize whether something is right or wrong and they should act accordingly.
In this show BSH, he suffered so much abuse as a child bcoz of the insanity of SSW, which made him insane too but he had a choice to confess to police about SSW and could have lived a different life but instead he chose the wrong path to commit a crime in order to get the deal, which will change his future and will end his sufferings too.
whereas, KEH had CYJ, KEH with his nature and guidance from CYJ turned out to be a very different person who is reliable, sensible and understanding. Its not that KEH didn't suffered but he has an aid which is always by his side i.e CYJ, thus creating a special bond between them.
I can really understand how frustrated and upset CYJ must have felt when she was told that her frnd died Instead of her or the situation could have been different if she had answered her phone, it made her feel guilty bcoz she wasn't able to do anything. It must have been so hard for her so she carried guilt for 19 years. In all those 19 years CYJ had a choice to be HAPPY and FREE but she didn't, i know why bcoz even if she free herself from it and live normally like others but she wont be able to set her HEART free which is CAGED due to GUILT.
The agony and anger she felt when she was listening to Soo jung's last message must have broken her from inside bcoz her frnd died just like that as a bait. But i m so happy that in end CYJ was able to solve it, and set her heart free of all sufferings and same goes for Soo Jung .
CYJ is truly a hero, she lived in guilt and pain for so many years just to make sure she can give her frnd the justice she deserved by punishing the killer as per the law and meanwhile protecting KEH from BSH and his gang.

Music:
For the past 20 days i m like NOBODY NOBODY NOBODY KNOWS..:) hahahahah
Re- Watch
Definitely Yes but right now i m in a mode of recommending it to my frnd, so i can make other see what a MASTERPIECE looks like.
Thank You to the writers of this show....