In "Signal" Kim Hye Soo was alive but Jung Suk Yong died.
On the 7th episode of tvN Friday/Saturday drama "Signal" (script Kim Eun Hee, director Kim Won Suk) broadcast on Feb. 6th, Lee Jae Han (played by Jo jIn Woong) of the past caught Han Se Kyu, the real culprit of the grand larceny case. Thanks to this, Cha Soo Hyun (played by Kim Hye Soo) was now alive.
Nonetheless, Oh Kyung Tae (played by Jung Suk Yong) killed someone else just the reason that his daughter was killed. Because of this, he was still imprisoned.
In the end, he ended up dying there. The Park Hye Young (played by Lee Je Hoon) of the present saw that there was Oh Kyung Tae's grave in the ground and was upset saying, "The past might change but there are things that do not change in the present. There is injustice in the world."
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.
