This is my thought. I might be way off. The two leads had to hide their relationship when ...

This is my thought. I might be way off. The two leads had to hide their relationship when they were younger, but somehow got found out and there was a scuffle and the person fell off a cliff (Jihoon). After that incident they were separated, but somehow he sends him little polaroids. The therapist is the half brother of the guy who fell off a cliff (Jigeon) and his father is involved in the mafia. The detective thinks he is the mastermind behind the drug case and also he stole the real therapists identity (he’s not Dr. Yoo Hee Joo) to get closer to our lead, Suhyeok. He is obsessed with him and I think could have had a hand in the cliff accident as well. In the previous chapters he has black hair and glasses and his brother has orange hair. I can’t seem to picture the white hair guy (Haechan) planning something, but something is going on. Someone called him back home. Jigeon called someone and flipped.

The police interrogated Su Hyeok because he works for one of the companies mentioned in the drug case and they are trying to find Jigeon. Hyeok mentions that he used to follow him around, but not that they were close. Shin Yong is the man that was arrested and he also helped Jigeon steal the Dr.’s identity (allegedly).

I think in chapter 13 they must have mixed up the names and that can be confusing.

Hopefully things are a bit clearer.