The Kind Worth Killing

While reading the book, I thought that although the characters were indeed people worth killing, could murder be justified because of that?
Then, if they were killed through legal judgment, could that be justified, and were they truly people worth killing?
Then does it mean there are people worth killing, and if the basis for judging this is not an individual but the agreement and promise of the majority, they can be killed?
It was a book that allowed for many thoughts.

Betrayal and twists lead to unexpected results.
It chillingly delves into the desires, deception, and the process of self-justification lurking within human beings.

I liked that this work ended with an open conclusion at the end.
It can be somewhat expected from the mother who suddenly became an environmentalist, waking up screaming in the middle of the night, or the father's words that he loves you no matter what.
Still, it concluded by leaving a bit of room for the reader.