Secretly, Greatly
Also known as: Secretly, Greatly / 偉大的隱藏者

Genre: Drama, Action, Comedy
Country: South Korea
Director: Jang Cheol-soo
Writer:
Release Date: June 5, 2013 (South Korea)
Related Show:

Cast:

• Kim Soo‑Hyun
• Lee Hyun‑woo
• Ri Hae‑jin
• Park Ki‑woong
• Ri Hae‑rang
• Woo‑sik Choi
• Yoon Yoo‑joo
• Lee Chae‑young
• Heo Jeom‑ran

Synopsis:
Three elite North Korean sleeper agents live under cover for so long that they believe their cover stories are their real identities. They are shocked when they are ordered to kill one another or face death at the hands of an elite hit team.