Every season of Insider ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Insider!

At a high-end gambling house, Kim Yo-han raises the stakes beyond what he can afford. Mok Jin-hyeong asks him to stick his neck out again.

Episode 1

Amid the countless inmates out to get him, Yo-han finds a person willing to take a chance on him. He makes his debut in the prison’s underground casino.

Episode 2

Yo-han sharpens his skills with the help of a mysterious guru next door. As he works his way up, he sets his sights on entering the big leagues.

Episode 3

Jang Seon-o takes Yo-han under his wing. Song Du-cheol demands payment in blood. Oh Su-yeon seeks to form an alliance.

Episode 4

Seon-o asks Yo-han to spy on his behalf. Su-yeon investigates the death of Yo-han’s grandmother and its connection to an officer’s suicide.

Episode 5

Seon-o teaches Yo-han the art of deception, provided that they team up to play against Yang Jun. No Seung-hwan realizes that he’s been overlooked.

Episode 6

Episode 7

Episode 8

Episode 9

Episode 10

Episode 11

Episode 12

Episode 13

Episode 14

Episode 15

Episode 16

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.

The Best Seasons of Insider

The Best Seasons of Insider

Season 1