Wonderful acting from all actors, especially the kids paired with an intriguing story really allows this drama to flourish.

The story is quite dark and there are many unexpected twists. The family dynamics and friendship I find the most interesting and developed. The character growth here is also incredibly mature and well written. This is a show that is jam packed with evidence, which really increases its rewatch value for me. One last positive thing here is that all the characters have pretty extreme flaws, which allows for realistic characters to really drive this story and create simple but strong conflict.
This show has some plot holes that I think were hard to fill because of the complexity of the story line. The characters also change their views very fast and unexpectedly: something very small can trigger unexpected emotions in these fragile characters. This type of change of behavior can sometimes be confusing to the viewer though who is already accustomed to how they normally act.

The ending is quite surprising and I personally think it can be interpreted in many ways. If you're into this genre this is a must watch, if you're not I would say to stear away because it does get quite dark.