[ Dokja watches Joonghyuk curiously, oh he knows when the man is attached to someone. But the way Reze says it... please?? ]

Assuming he kills and somehow gets away with it, you could use that as leverage to stack more evidence on top of him. [ But that's assuming he feels the need to kill in the first place. It also means waiting some time until that happens. ] But that would be the best route.