To play as Sung Yi Kyum's servant and right-hand, Lee Yi Kyung will certainly bring humor to this drama. Just by looking at his poster, he smiles candidly. His role as Park Chun-Sam will be talkative and funny, yet he is affectionate and easily cries. His bright and energetic role will eventually capture the hearts of many, not to mention, he will do anything for the sake of his master.

Additionally, Lee Tae Hwan will play as Sung Yi Beom. He will be Sung Yi-Gyeom's younger stepbrother, whose mother is a slave, and will take a stand against his older stepbrother.

"Secret Royal Inspector" will premiere on Dec. 21 at 9:30 p.m. Stay tuned for more updates.

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Written by Sam Yap