

Series
Secret Door
DramaHistoryMystery
A re-imagining of the legendary tale of the troubled father-son relationship between King Yeongjo and his only son Prince Sado. While his father insists on a strong and centralized government, Crown Prince Sado promotes social justice and equality throughout the kingdom. Throughout eight fateful years, the strain on their relationship — both familial and political — eventually evolves into a total breakdown, ending with one of the most tragic stories in Joseon history.
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Seasons & episodes
1Episode 122 Sept 2014 · 58mA document, thought long destroyed, tying King Yeongjo's ascension the throne to the Noron Faction, resurfaces. Crown Prince Sado distrupts the government by proclaiming the creation and distribution of books by commoners legal.
2Episode 223 Sept 2014 · 59mHeung Bok's body is found and the conspiracy to cover-up his murder begins.
3Episode 329 Sept 2014 · 59mUnsatisfied with the result of the investigation into Heung Bok's death, Crown Prince Sado re-opens the case, personally heading it himself.
4Episode 430 Sept 2014 · 59mPrince Sado succumbs to all evidence painting Heung Bok as a traitor, that is until Ji Dam approaches him with proof to the contrary.
5Episode 56 Oct 2014 · 58mWith Ji Dam's help, Prince Sado delves deeper into the conspiracy behind Heung Bok's death.
6Episode 67 Oct 2014 · 59mJi Dam hides out in a brothel while Prince Sado discovers the meaning behind Jung Woon's dying message.
7Episode 713 Oct 2014 · 58mPrince Sado seeks out the identity of the man Heung Bok's final royal painting.
8Episode 814 Oct 2014 · 59mAn investigation into yet another death leads Prince Sado to suspect one of the people he trusts most.
9Episode 920 Oct 2014 · 58mPrince Sado is accused of murder.
10Episode 1021 Oct 2014 · 59mTeacher Park Moon Soo makes a deal to try and save Prince Sado from prison.
11Episode 1127 Oct 2014 · 58mPrince Sado becomes suspicious of his father's role in the document.
12Episode 1228 Oct 2014 · 59mKing Yeongjo appoints a new Prime Minister and sets out to enact new tax reforms while Prince Sado struggles with what to do about his father.
13Episode 133 Nov 2014 · 61mKing Yeongjo unleashes his punishment on the booklenders.
14Episode 144 Nov 2014 · 59mKing Yeongjo strips Prince Sado of all governing power. Three years later, Prince Sado begins a secret plan beginning with taking Kim Taek as his new teacher.
15Episode 1510 Nov 2014 · 61mIn order to get his governing powers back, Prince Sado begins difficult negotiations with the Qing.
16Episode 1611 Nov 2014 · 62mKim Taek sets a plan in motion to oust and replace Prince Sado.
17Episode 1717 Nov 2014 · 61mPrince Sado returns to the regency and sets out to make the country a better place for all classes.
18Episode 1818 Nov 2014 · 61mKing Yeongjo and Prince Sado clash over allowing commoners entrance to the civil service exam.
19Episode 1924 Nov 2014 · 60mPrince Sado faces the fallout of allowing commoners take the civil service exam.
20Episode 2025 Nov 2014 · 58mThe Noron set a new plan in motion to oust the Crown Prince.
21Episode 211 Dec 2014 · 62mOn the eve of the new Queen announcement ceremony, the Prince discovers a plot to assassinate the King.
22Episode 222 Dec 2014 · 62mThe Noron set out to discover why the Prince has been sending funds to the North.- 23Episode 238 Dec 2014 · 62m
- 24Episode 249 Dec 2014 · 61m
Details
- First aired
- 22 Sept 2014
- Last aired
- 9 Dec 2014
- Status
- Ended
- Language
- Korean
- Network
- SBS
- Episodes
- 24
- Votes
- 12 on TMDB
Cast
Lee Je-hoonCrown Prince Sado
Kim You-jungSeo Ji-dam
Yoon So-heeSeo Ji-dam / Park Bingae
Han Suk-kyuKing Yeongjo
Park Eun-binLady Hyegyeong
Kim Min-jongNa Chul-joo
Lee Won-jongPark Mun-su
Kwon Hae-hyoSeo Kyoon
Jeon Kuk-hwanLee Jong-sung
Jang Hyun-sungHong Gye-hui
Uhm Hyo-seopMin Baek-sang
Kim Ha-kyoonKim Sang-ro
Choi Won-youngChae Je-gong
Seo Jun-youngShin Heung-bok


















