I don't usually leave reviews so bare with me haha. This series is uncomfortable and heavy to watch so this should be a trigger warning. I can't watch it in one sitting because my mind needs a time out by how serious the topics are. Please take care of your mental health! If you need to take a rest then please do so.
So, anyways, the acting of every actors and actresses are commendable. That's my most favorite part. Kim Nam Gil's performance is great as always! I also appreciate the performance of the actors playing criminals. Imagine having to read the script, memorize and deliver those lines?...The acting is really good and will made you really hate them.
I also liked the good balance of storytelling from the perspective of anyone involved. Crime shows like this shouldn't be centered around the criminals because that's hella problematic. Like *ehem* "Dahmer" *ehem*. Please excuse me for squeezing this in lol.

Overall, this series is worth watching.