From DramaWiki



  • Title: 시그널 / Shigeunul
  • Genre: Crime, thriller, mystery, romance
  • Episodes: 16
  • Broadcast network: tvN
  • Broadcast period: 2016-Jan-22 to 2016-Mar-12
  • Air time: Friday & Saturday 20:30
  • Original Soundtrack: Signal OST
  • Related TV shows: Gap Dong (tvN, 2014), Signal (KTV, 2018), Unknown Number (Tencent, 2019)


A walkie-talkie in the present somehow picks up signals from a detective in the past, Lee Jae Han (Jo Jin Woong). Police profiler Park Hae Young (Lee Je Hoon) finds this walkie-talkie and uses it to help solve cold cases. Detective Cha Soo Hyun (Kim Hye Soo), who was once a rookie at Lee Jae Han’s station, leads the cold-case team. Thanks to Park Hae Young (and Lee Jae Han), the team solves infamous cold cases. But communicating with the past has consequences.

User/Viewer Ratings

(13 votes)


Correlation Chart - click to enlarge
Main Cast
Crime lab/investigation unit
  • Jang Hyun Sung as Kim Bum Joo (early 40s - late 50s, investigation Chief)
  • Jung Hae Kyun as Ahn Chi Soo (mid 40s - late 50s, investigation Section Chief)
  • Kim Won Hae as Kim Gye Chul (early 40s, detective)
  • Jung Han Bi as Oh Yoon Seo (mid 30s, law scholar of NFS)
  • Lee Yoo Joon as Jung Hun Gi (30s, forensic evidence agents)
  • Kim Min Gyu as Hwang Ui Kyung (early 20s, officer)
Kim Yoon Jung & Seo Hyung Joon's case (ep 1-2)
  • Oh Yun Ah as Yoon Soo Ah (a nurse who has worked at Seonil Mental Hospital)
  • Lee Young Eun as Kim Yoon Jung
  • Song Yoo Hyun (송유현) as Kang Se Young (a nurse who has worked at Seonil Mental Hospital)
  • Seo Jung Joon (서정준) as Seo Hyung Joon (a suspect for Kim Yoon Jung's kidnapping and murder case)
  • Kim Soo Jin as Kim Yoon Jung's mother
South Gyeong-gi Serial Murders case (ep 2-4)
  • ?? as Jung Kyung Soon
  • ?? as Choi Young Shin
  • Kim Ki Chun as Lee Chun Goo (bus driver)
  • Lee Ki Sub (이기섭) as Lee Jin Hyung (Lee Chun Goo's son)
High-ranking Official Serial Robberies at Gyesu-dong and Hanyoung Bridge collapse (ep 5-7)
Missing Shin Da Hye's case (ep 7-8)
Hongwon-dong Serial Murders Case (ep 9-11)
High school student rape case at Inju, Lee Jae Han & Ahn Chi Soo's murder case, and Park Sun Woo unnatural death case (ep 11-16)
Extended cast

Production Credits


2016 1st Asia Artist Awards:

2016 tvN10 Awards:

2016 52nd Baeksang Arts Awards:

  • TV Category - Best Drama
  • TV Category - Top Excellence, Actress (Kim Hye Soo)
  • TV Category - Scriptwriting (Kim Eun Hee)

Episode Ratings

See Signal/Episode Ratings


  • This drama was specially aired on tvN for the broadcast channel's 10th anniversary year.
  • Kim Hye Soo received 50 million won (approximately $45,000) per episode, breaking the record of Choi Ji Woo in Twenty Again. It was the highest salary for a lead in a cable drama at the time.

External Links

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Reply 1988 Friday & Saturday 20:30 Memory