In "Signal" the truth of the South Kyeonggi Province serial killing incident was revealed.
On the 4th episode of tvN Friday/Saturday drama "Signal" (script Kim Eun Hee, director Kim Won Suk) broadcast on Jan. 30th, Lee Chun Goo the bus driver confessed that he was the real culprit of the serial murder that had happened in the Kyeonggi serial murder incident.
On this day, Park Hae Young that Lee Chun Goo was definitely not the person who was guilty. When the incident was happening, Lee Chun Goo was operating the 95 bus and because he knew that he had given rides to his sick son. With that, he was very certain that Lee Chun Goo's son was the truly guilty one.
Park Hae Young had witnessed Lee Chun Goo's son Lee Jin Young murder the city government employee Kim Won Kyung (played by Lee Shi Ah). With that, he found a secret shock machine that Jung Kyung Soon had hidden. This shock machine was an object that Lee Jae Han had previously given to Kim Won Kyung.
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.
