In "Signal" Kim Hye Soo died.
On the 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) told Park Hye Young (played by Lee Je Hoon) why Oh Kyung Tae (played by Jung Suk Young) was kidnapped.
On this day, Park Hye Young learned that Oh kyung Tae had evil intentions with regards to Shin Dong Hoon because Shin Dong Hoon's daughter had been part of the reason that Oh Kyung Tae had targeted his daughter.
Park Hye Young rushed to go to Oh Kyung Tae. There, he saw that Oh Kyung Tae was there and Kyung Tae said, "It's too short for you." With that, he realized something was wrong. He looked below and saw that many police officers were trying to open a door where they assumed that Shin Dong Hoon's daughter was.
Nonetheless, Park Hye Young remembered that Oh Kyung Tae had learned of electricity skills while in prison and was scared that this was the reason that his colleague was going to die.
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.
