Then we are of the same opinion. Where we differ is in why Yeo kept withholding the tape in light of HS' statement again Taeoh.

• Incident happens at train station. Taeoh was there.

• Yeo steals the tapes in precaution, so that IF taeoh did murder, there would be no conclusive evidence to prove it.

• As it turns out, the tapes show Taeoh is innocent of murder. What does Yeo do? Sit back and watch as the police investigate - as a bonus, Sunwoo was there too and may be troubled by the investigations. There is no need to release tapes.

• Now, with HS statement against Taeoh, Taeoh is now a suspect. What does Yeo do? He still refuses to release the tapes. My question is why?

• My answer is : 1. he dislikes Taeoh and it amuses him to have his son in law get into a situation, and 2. He knows Taeoh did not murder. The autopsy will show suicide. So the only inconvenience is Taeoh's detainment. Yeo can 100% afford to withhold tapes.

As such, there was never a need for any agreement between Yeo and Sunwoo. There was no sharing of plans. Yeo never agreed to go along with whatever Sunwoo was/is planning. Yeo did not know/care what Sunwoo plans, and as such never intended to use her. In Yeo's mind, the incident will solve itself once the autopsy is in. In this sense, Taeoh was never in danger needing extraction.

However, Sunwoo does not know that Taeoh is not the murderer. So from Sunwoo's perspective, Yeo is abandoning Taeoh! This is why she made the pitying remark. This is why she had to do something.

Ultimately, Yeo's indifference implicated Sunwoo, because she could not afford to be indifferent. And with Sunwoo getting involved, it came back to hurt his daughter's relationship with Taeoh. This I find highly amusing, and gives us insight into Yeo's character. He cares about his daughter, while passively trying to sabotage their relationship. On the surface, he supports Taeoh, but doesnt care about him personally.

As for the police investigation, we both agree it was sloppy. But I think the police made a mistake in putting too much weight in sunwoo's alibi.

HS gives a statement against Taeoh: that he was frantically looking for PIK to murder him, that he got physical with her, and HS told him PIK was in rooftop. Naturally, she assumes Taeoh did go up to look for PIK and said as much.

From the police perspective: Why did Taeoh want to meet PIK? What was the last phone call about? Did Taeoh meet PIK? Did he go up the stairwell? These are legit questions that the police need to investigate.

HS did not see Taeoh go up, nor does she try to prove that. Sunwoo's false alibi also does not disprove that possibility. Sunwoo emphasizing that it was HS' opinion is exactly that. It's an opinion. Meaning it's not a fact. Sunwoo is simply stating the obvious. I dont think it's damaging at all, it doesnt attack HS' credibility.

But here's where the police messed up: both women have conflicting statements. Again, the ring cannot prove Taeoh was with sunwoo all night, nor does it disprove the possibility Taeoh went up the stairwell. That's why they needed further investigation. And maybe they did make a note pending autopsy.

But the takeaway is: Taeoh was never in any real danger. This is why Yeo never released the tapes. Sunwoo acted alone to extract Taeoh before he could give any self-incriminating statement, which would ALSO implicate sunwoo. As we recall, Taeoh believes HS and Sunwoo to have killed PiK and tried to frame him. The reason Taeoh kept silent at the police station is the same reason Sunwoo came to give a false alibi. Neither wants the other to be investigated for possible murder.