

By Dramabeans
Lee Yong-suk
Kim Yi-young
48
35 minutes
SBS TV
South Korea
Korean
Source: Wikipedia
Min Jin-won, the late Queen Inhyeon's brother, a leader of the Noron political faction and one of the most seasoned politicians in Joseon court.
Go-mi
New Inspector
Ah Bong

Yi Kwang-jwa
Yi Sun, King Sukjong
Yi In-Jwa
Jo Hyeon-myeong
Jang Dal

Han Jeong Seok
Chun Yeo-ji
Yi Hwon, Prince Yeonryeong
Bak Mun-su
Lee I-myung
Queen Inwon
Dal-moon
Yi Geum, Prince Yeoning (later King Yeongjo)
Do Ji-kwang
Yi Tan, Prince Milpung, Crown Prince Sohyeon's direct descendant. He believes that the Joseon throne should be owned by a descendant of Crown Prince Sohyeon. Using all means necessary, he tries to seize the position of Crown Prince and, subsequently, the throne.
Yoon Hyuk
Wi Byung-joo. An investigator of Saheonbu. Coming from a family of Namin (Southerners) political faction, he faces difficulties in his career as investigator, until he aligns himself with Noron political faction, and controls Saheonbu on their behalf.