SY got suspicious of TS because he lied about knowing SY uncle (who is dead). He went to TS office and rifled around and found a report on a prostitute who works at the club SY used to work at before he got attacked.
SY went to talk to his old boss at the club about the person he saw in the file, and the boss said that the guy was missing. SY was shocked that TS was somehow connected to the missing person. He left, and Minhyuk's old fuck buddy runs out and says that the missing person is his friend. SY tells him about the file.
So basically, SY and the guy from the club go and investigate an address SY found in TS office, and in this chapter they find a body in a suitcase. SY realizes that TS has just been telling him nothing but lies and probably knew about the dead body.
The people who caught them are a mix of the mayor's people (the mayor is the one who killed the guy in the suitcase that they are looking for), and the rest are TS people who may or may not know SY.
It's not that he loves Minhyuk. TS right hand man (he calls him his Hyung) has known MH since he was a teenager and he's the one who brought MH into the organization. He cares for MH but not in a romantic way.
The reason TS says that if hyung knows who the mole is, then that makes him an accomplice is because hyung is the one who brought MH into the organization. So he's basically telling his hyung to take care of MH himself, and if he does then he'll overlook the fact that hyung brought a traitor into the group. If he doesn't take out MH, TS will treat them both like traitors.

Quite in the confused state.........
Can someone please explain whats happening to the story now...
Thanks in advance!