Sign (South Korean Television Series)
Sign (Korean: 싸인; RR: Ssain) is a South Korean television series that premiered on SBS on January 5, 2011, and concluded on March 10, 2011. The series, which consists of 20 episodes, focuses on the professional and personal challenges faced by forensic pathologists at the National Institute of Scientific Investigation. It was directed by Jang Hang-jun and written by Kim Eun-hee.
The narrative centers on the relationship between the seasoned and demanding forensic doctor Yoon Ji-hoon, portrayed by Park Shin-yang, and the tenacious rookie Go Da-kyung, played by Kim Ah-joong. As they navigate complex cases, they uncover a broader, mysterious conspiracy involving their organization. The series was originally developed under the working title Heaven.

Cast
The series features an ensemble cast, including:
- Park Shin-yang as Yoon Ji-hoon
- Kim Ah-joong as Go Da-kyung
- Uhm Ji-won as Jung Woo-jin
- Jeon Kwang-leol as Lee Myung-han
- Jung Gyu-woon as Choi Yi-han


Production
Principal photography for the series commenced on November 1, 2010. The show is notable for being one of the earlier South Korean dramas to focus heavily on the procedural aspects of forensic science.
Reception
Sign maintained consistent viewership throughout its 20-episode run, with its final episode achieving a nationwide rating of 22.1% according to TNS Media Korea data.
Related Works
The series was adapted into a Japanese television drama titled Sign: Houigakusha Yuzuki Takashi no Jiken, which aired on TV Asahi in 2019.