The story itself does not focus only on "who is the culprit", but also delves into the psychology of the characters behind the incident and the families of the victims who were left behind the relationships between the characters and the townspeople are (the main story here). So, you need to understand the gist of this drama especially the 'psychological' aspect rather than watching it for 'thriller' and some brutal scenes. The cast was so good that I couldn't help but love them all even if I knew they were the bad guys.
The only drama that doesn't have plot holes. I like the way the writer told each story in detail. There is no question left unanswered, everything is neatly written.
This drama will make you feel every emotion you may not have felt before. For example: respect, plot, suspense, relief, regret, nostalgia, fear, suspense, blood; You can feel it. They also highlight the importance of friendship, partnership, work ethic, family relationship (even bad guys love their kids), the importance of letting go and moving forward, the importance of making a rational judgment, and so much more that I can't list.
I totally recommend this drama.