(Lee Yoo-young): An ambitious businesswoman who assists Yo-han for her own vengeance.
: He forms a tense partnership with Oh Soo-yeon , a successful businesswoman with a dark past seeking her own retribution, and Jang Sun-oh , a gambling genius who controls the prison's underground games. Cast & Characters It is available for streaming on platforms like
The show consists of and was originally broadcast on JTBC in 2022. It is available for streaming on platforms like Viki and Netflix . Watch Insider | Netflix Series Information : At the suggestion of senior
The series revolves around , a meticulous judicial trainee who lives with his grandmother. and Jang Sun-oh
(Kim Sang-ho): A senior prosecutor who initially sends Yo-han undercover but whose motives become murky. Series Information
: At the suggestion of senior prosecutors, Yo-han goes undercover into Seongju Prison to gather evidence against a corrupt gambling ring and a high-ranking prosecutor.
(Heo Sung-tae): A powerful and corrupt chief prosecutor.