In "Signal" Jo Jin Woong found the real culprit.
On the episode of tvN Friday/Saturday drama "Signal" (script Kim Eun Hee, director Kim Won Suk) broadcast on Feb. 6th, Jae Han (played by Jo Jin Woong) waited out of Han Se Kyu's house because he was the main suspect and Jae Han wanted to get evidence.
On this day, Jae Han looked around to find evidence. The main suspect was the son of the Attorney General and he couldn't issue an indictment. He said, "Is it like that over there too? If you have money and you got backing, you can do whatever you want and still live on? But 20 years went on, something must've changed by now, right?" Jae Han then heard Hye Young (played by Lee Je Hoon) say, "Yes, it's different. It's going to be different than back then. Let's make it that way."
Afterwards, Jae Han said, "I'm definitely going to make it so."
Meanwhile, "Signal" is about two detectives - one from the past and one from the present who communicate through walkie talkies to resolve long-time unresolved cases.
