In "Signal" Kim Hye Soo and Lee Je Hoon ended up catching the serial murderer.
On the 4th episode of tvN Friday/Saturday drama "Signal" (script Kim Eun Hee, director Kim Won Suk) broadcast on Jan. 30th, Lee Jae Han (played by Jo Jin Woong) of 1989 and Park Hae Young (played by Lee Je Hoon) of 2015 and went to rescue the culprit of the serial murderer responsible for the Kyeongi murder incident.
In this process, Park Hae Young realized who the real culprit was. This was none other than Lee Jin Hyung, the son of Lee Chun Goo who had been driving bus #94. At this, Cha Soo Hyun (played by Kim Hye Soo) went to the hospital where Lee Chun Goo and Lee Jin Hyung were and there, he had a fist fight with Lee Jin Hyung.
Nonetheless, the situation was reversed. The Lee Chun Goo of the present had confessed that he was the murderer. He had copied the murderer of the past and he had even murdered the witness. In the end, it seemed like his wrong paternal love was in the way of the investigation. Through the walkie talkie, the 9th victim of the 1989 murder Kim Won Kyung (played by Lee Shi Ah) was confirmed to have died, making people feel shocked and sad.
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.
