In "Signal" Lee Sang Yeop escaped the investigation scope of the police.
On the 10th episode of tvN Friday/Saturday drama "Signal" (script Kim Eun Hee, director Kim Won Suk) broadcast on Feb. 20th, Cha Soo Hyun (plyae dby Kim Hye Soo) who was a victim of the serial murder incident ended up being very proactive in the investigation for a change.
Cha Soo Hyun (played by Kim Hye Soo) almost became a victim of a murder case and confessed that he escaped with the help of a detective. The detective used Cha Soo Hyun's testimony as a basis to continue the investigation.
Nonetheless, Lee Sang Yeop learned that Cha Soo Hyun had escaped and prepared to move. With that, he was luckily able to avoid the investigation scope of the police officers.
Afterwards, until 2015, it turned out that this person killed 9 people and this case was taken on by the serial murder unsolved mystery team.
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.
