Secret Royal Inspector & Joy

Secret Royal Inspector & Joy is a 2021 South Korean television series starring Ok Taec-yeon and Kim Hye-yoon. It aired on tvN from November 8 to December 28, 2021. It is also available for streaming on iQIYI and Viu in selected territories.

Synopsis
Set in Joseon dynasty, it tells the story of a young gourmet who unintentionally becomes a royal inspector and a divorced woman who rushes to find happiness, as they team up to investigate and expose corrupt politicians.

Main

 * Ok Taec-yeon as Ra Ian, an intelligent and unmarried 6th grade public service worker who wishes to open a small dumpling shop, but ends up becoming a secret royal inspector.
 * Kim Hye-yoon as Kim Joy, a realist woman who is full of desire and passion, and believes that divorce can happen to anyone.

People around Ra Ian

 * Lee Joon-hyuk as Crown Prince Sohyeon
 * Yang Hee-kyung as Madam Jo

People around Kim Joy

 * Chae Won-bin as Hwang Bo-ri / Biryoung
 * Nam Mi-jung as Jang Pat-sun
 * Joo Jin-soo as Noh Chu-han

Secret royal investigators

 * Min Jin-woong as Yook-chil
 * Park Kang-seop as Goo-pal
 * Lee Sang-hee as Kwang-soon

Gangbyeonsau

 * Lee Jae-kyoon as Park Tae-seo
 * Jung Soon-won as Cha Mal-jong
 * Kim Hyun-joon as Ji Maeng-soo
 * Park Shin-ah as Kang Han-gi

Rulers

 * Jeong Bo-seok as Park Seung
 * Jo Kwan-woo as King Injo
 * Choi Tae-hwan as Park Do-soo

People in Kkori Island

 * Bae Jong-ok as Deok-bong
 * Ha Seung-jin as Ba-hoe

Extended

 * Cha Yeop as Hong Seok-gi
 * Kwon Oh-kyung

Special appearances

 * Song Jong-ho as Jang Ki-wan
 * Cha Hak-yeon as Choi Seung-yul

Production

 * The series is formerly known as Tale of the Secret Royal Inspector and Joy . It is one of tvN's 15th anniversary special projects.
 * The lead roles were first offered to actors Jo Byeong-kyu and Jung So-min.