In "Signal" Kim Hye Soo and Jo Jin Woong were in a secret investigation together and smiled happily.
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) was the person that Cha Soo Hyun (played by Kim Hye Soo) had a crush on as they started a crush on each other.
Lee Jae Han was being monitored for each and every move. Lee Jae Han said to Cha Soo Hyun that no one would care about her even if she were gone. Therefore, she asked her to practice driving with him and started to go onto a practicing investigation with him.
Lee Jae Han was looking for a diamond necklace that was going to open up the solution for the investigation regarding the scandal between the political powers and the chaebols. Nonetheless, the necklace was already sold and the phone number was fake.
At this, Lee Jae Han told Cha Soo Hyun to to find the real number. At this, he said, "This is a secret investigation between you and me." Hearing this, Cha Soo Hyun shyly smiled.
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.
