Plot: Unsatisfied with the result of the investigation into Heung Bok's death, Crown Prince Sado re-opens the case, personally heading it himself.
Cast
Lee Je-hoonCrown Prince SadoLee Je-hoon was 30 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Wed, Jul 04 1984
Kim You-jungSeo Ji-damKim You-jung was 15 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Wed, Sep 22 1999
Yoon So-heeSeo Ji-dam / Park BingaeYoon So-hee was 21 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Fri, May 07 1993
Han Suk-kyuKing YeongjoHan Suk-kyu was 49 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Tue, Nov 03 1964
Park Eun-binLady HyegyeongPark Eun-bin was 22 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Fri, Sep 04 1992
Kim Min-jongNa Chul-jooKim Min-jong was 42 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Thu, Mar 23 1972
Lee Won-jongPark Mun-suLee Won-jong was 48 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Sat, Jan 01 1966
Kwon Hae-hyoSeo KyoonKwon Hae-hyo was 48 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Sat, Nov 06 1965
Jeon Kuk-hwanLee Jong-sungJeon Kuk-hwan was 62 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Mon, Jul 21 1952
Jang Hyun-sungHong Gye-huiJang Hyun-sung was 44 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Fri, Jul 17 1970
Uhm Hyo-seopMin Baek-sangUhm Hyo-seop was 47 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Mon, Oct 24 1966
Kim Ha-kyoonKim Sang-roKim Ha-kyoon was 55 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Sun, Aug 23 1959
Choi Won-youngChae Je-gongChoi Won-young was 38 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Sat, Jan 10 1976
Seo Jun-yeongShin Heung-bokSeo Jun-yeong was 27 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Fri, Apr 24 1987
Ha Seung-leeQueen JeongsunHa Seung-lee was 19 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Mon, Jan 09 1995
Park Hyo-juWoon-shimPark Hyo-ju was 31 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Fri, Oct 08 1982
Kim Tae-hunKang Pil-jaeKim Tae-hun was 39 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Mon, May 26 1975
Jeong Gyu-suYang Soon-ManJeong Gyu-su was 57 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Thu, Sep 05 1957
Kwak Hee-SungKim MooKwak Hee-Sung was 24 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Wed, Apr 18 1990
Jo Woo-jinLee Dal-seongJo Woo-jin was 35 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Tue, Jan 16 1979
Kim Woo-seokLee Seon [Young] / Lee San [Young]Kim Woo-seok was 18 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Tue, Jun 25 1996
Lee Won-jaeKang Seo-wonLee Won-jae was 35 in Secret Door - Season 1 - Episode 3 (Episode 3).
Birthday: Wed, Nov 22 1978