"Insider" Kim Yo Han, a judicial trainee who will go undercover in an investigation but will suddenly face a crisis and will be in prison. He will do his best in order to change his fate while in prison.
"The Devil Judge", Kang Yo Han aura and merciless way of punishing the guilty, dishonest criminals who face his trials, create a different dimension of coexistence between good and evil within a court.
"The Devil Judge", Kang Yo Han aura and merciless way of punishing the guilty, dishonest criminals who face his trials, create a different dimension of coexistence between good and evil within a court.
Both deal about a male duo that works together but where the older one is neither good or bad and where the younger one is suspicious of them. Both dramas show that the characters have both had a dramatic past that seems connected to each other. The only big difference is that Watcher consists of police officers working together with a lawyer, whereas The Devil Judge is a pure lawyer drama.