Insider (Korean: 인사이더) is a 2022 South Korean television series starring Kang Ha-neul, Lee Yoo-young, and Heo Sung-tae.

It aired on JTBC from June 8 to July 28, 2022, every Wednesday and Thursday at 22:30 (KST) for 16 episodes.

[9][10] The series revolves around a judicial trainee whose life turns upside down when he goes on an undercover investigation, and ends up struggling to try to recover his normal life.

[1][2] It was reported that the first script reading of the cast was held on May 21, 2021.

[11] The series was initially scheduled for release in the second half of 2021, but was pushed back to 2022.