Secret Royal Inspector is a great comedy with a historical backdrop. The drama has a well balanced mix of dramatic and comedic moments that are a delight to watch and a small dose of romance. For viewers that are expecting a torrid romance, this drama will be disappointing, but the chemistry among the cast can be felt in every episode. The leading couple is fun to watch and their camaraderie is solid; their friendship, even when bickering, is nice to watch as they slowly but surely develop romantic feelings. The cast did a great job delivering their characters and they are fun to watch all the way to the end. One of the greatest aspects of this drama is the ability of the cast to show the right facial expression for every occasion. Overall, great interactions among the character (Male and female lead, Male lead and his servant, and last but not least Ahn Nae Sang as Jang Tae Seung who raised the female lead and Shin Ji Hoon as the Royal Guard Choi Do Gwan). This drama is fun to watch; as said before, it has great characters and the dialogues are smartly written. Enjoy it!