Insider — Season 1, Episode 4: Episode 4
Action & Adventure, Drama • 60 min • 1 season, 16 episodes • ★ 5.6/10
Episode synopsis
Jang Seon-o begins mentoring Yo-han, while Song Du-cheol seeks retribution. Meanwhile, Oh Su-yeon moves to form a strategic alliance.
About Insider
When a judicial apprentice goes behind bars while on an undercover job, he plays the hand he’s dealt to survive prison and get his payback.