Where to Watch Secret Door Episode 21
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The Crown Prince finds out that Na Chul-joo is planning on assassinating the king. Meanwhile, Hong Gye-hee grows suspicious of the Crown Prince and does everything he can to find evidence against him. The king is also made aware that the Crown Prince has been taking money out of his personal savings. (Source: Kocowa)
- Aired: December 01, 2014
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