Analyses & theories

As of E10 and E11 (finale).

I talked about how there's a Fibonacci sequence in the way the puzzles were revealed and how the numerical Fibonacci is some sort of relationship degrees.

It makes sense more now that the serial killer is in the center because deep down she's blaming herself.

• What if she wasn't lost?
• What if she went home instead?
• Why did she ever think her good mother abandoned her?

To her mind, she is indeed part of the puzzle. The center. The number 1. Because it all started with her.

• If she wasn't lost, none of it would've happened.
• If she was never born, her mother wouldn't die a miserable death.

She is a serial killer. But she is not a psychopath. She's depressed and angry. When she received her mom's diary, it threw her into deip depression. She was already depressed as it is, the diary made it worst. That's why the Captain was also blaming himself.

And for her, thinking that her mom's diary drove her to the point of no return, further pushed her deep down into oblivion.

"It's not my mom's fault! It's because of me! I won't go down alone! I want to face mom and tell her I avenged her!"

But why did Ina cry for her and later secluded herself, even didn't give a police statement?

Because in a way, Ina felt terrible. The killing stopped exactly because no one paid attention to the puzzle pieces. But 10 years later, Ina started to solve the case. The police department assigned her to their partner psych company and eventually found her way to her.

"Ahh! That kid! And she's still bothered by it! I'll restart the killings and puzzle pieces. This time, I'll make surm they'll make it public."

Yep! It isn't a flat story. Both the victims of the revenge and the suspect are suspects and a victim, respectively, as well.

If the authorities we rely on are corrupt, how and where can we get justice? If the authorities we trust to protect us can be easily ordered by someone higher than them to turn a blind eye, who will protect us?

Her revenge isn't even a revenge, it was justice. For her, ending her own life is itself an equal payment to killing everyone guilty. If people deserves death for directly or indirectly causing someone else's death, and it is only fair that she too deserves death.

She truly was a psychologist. She lives by logic, empathy, and principles. They started the cycle so she made sure it ends with her … death.

She was right. If she continues to live, the cycle won't end even if she's in prison or given a death penalty, and she would be a hypocrite—serving justice on others with her own hands but cannot apply the same justice on herself. The very thing corrupt authorities are guilty off.

In the end, through her death, she showed them what a fair law and justice system is: No one is above the law. What you apply to others also applies to you.

A truly complex and multidimensional story. All are suspects/guilty but at the same time all are victims/not-guilty.

And yes, the puzzle was a brilliant idea. It gave us the message that the dynamics involved in crimes committed by non-psychos are not as simple as we usually think. Like the psychologist, she wasn't a psychopath in the end, she was very sane. The Captain was a variable she didn't factor in, and probably what drove her to reveal herself to Ina, she felt guilty. A psychopath wouldn't even care about it.

A tragic and heartbreaking story indeed.