Episode 4 S01 E04

Lee Je-hoon (as Crown Prince Sado) Kim You-jung (as Seo Ji-dam) Yoon So-hee (as Seo Ji-dam / Park Bingae) Han Suk-kyu (as King Yeongjo) Park Eun-bin (as Lady Hyegyeong) Kim Min-jong (as Na Chul-joo) Lee Won-jong (as Park Mun-su) Kwon Hae-hyo (as Seo Kyoon) Jeon Kuk-hwan (as Lee Jong-sung) Jang Hyun-sung (as Hong Gye-hui) Uhm Hyo-seop (as Min Baek-sang) Kim Ha-kyoon (as Kim Sang-ro) Choi Won-young (as Chae Je-gong) Seo Jun-young (as Shin Heung-bok) Ha Seung-lee (as Queen Jeongsun) Park Hyo-ju (as Woon-shim) Kim Tae-hun (as Kang Pil-jae) Jeong Gyu-su (as Yang Soon-Man) Kwak Hee-Sung (as Kim Moo) Jo Woo-jin (as Lee Dal-seong) Kim Woo-seok (as Lee Seon [Young] / Lee San [Young]) Lee Won-jae (as Kang Seo-won) Kim Hyun (as Jang Hwa Won) Kim Chang-wan (as Kim Taek)

joseon dynasty (1392–1910)