Mr. Queen (2020)

S1E4 The Man Who Knows Too Much

So Yong is consumed by rage upon discovering that Cheoljong is the one plotting her demise. Meanwhile, Cheoljong suspects that So Yong is seeking vengeance against him, especially after O Wol, Hwa Jin’s court maid, mysteriously vanishes. As tensions escalate, both are caught in a web of distrust and fear, unsure of each other's true intentions.