In "Signal" Jo Jin Woong arrested Lee Sang Yeop.
On the 11th episode of tvN Friday/Saturday drama "Signal" (script Kim Eun Hee, director Kim Won Suk) broadcast on Feb. 26th, Park Hye Young (played by Lee Je Hoon) arrested the culprit of the serial murderer of Hong Wong Dong Kim Jin Woo (played by Lee Sang Yeop).
On this day, Park Hye Young saw that Lee Jae Han (played by Jo Jin Woong) was asking about a culprit, but Park Hye Young was worried that someone else's life was changing again and stopped talking.
At this, Park Hye Young said to Lee Jae Han, "Unresolved incidents are there because someone gave up. So please don't give up, detective."
At this, Lee Jae Han continued to go on with the Hong Won Dong incident alone. Park Hye Young of the present realized that the Hong Won Dong incident that he had left had disappeared all of the sudden.
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.
