Secret Door (2014)

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.

• First Air Date: 2014-09-22
• Last Air Date: 2014-12-09
• Total Seasons: 1
• Total Episodes: 24
• Episode Runtime: 60 min.
• Network: SBS