Season 1
A mysterious, justice-seeking entity throws chaos into the life of a cop who's willing to overlook ethics and corruption for a promotion.
All Episodes
Episode 1
Episode 1
December 17, 2021
After getting an officer suspended from service, Ryu Su-yeol gets a step closer to a promotion. Oh Gyeong-tae looks for a young girl's missing mom.
Episode 2
Episode 2
December 18, 2021
Su-yeol retraces Gyeong-tae's steps while tracking down the man in the helmet. Lee Hui-gyeom goes after a necklace that may hold crucial evidence.
Episode 3
Episode 3
December 24, 2021
Su-yeol falls from Do Yu-gon's good graces. While searching for the necklace at home, Su-yeol finds a collection of objects that are not his.
Episode 4
Episode 4
December 25, 2021
After ensuring Gyeong-tae's safety, Su-yeol pulls a dirty move. With Kim Gye-sik back on the force, the narcotics unit tracks down a street drug.
Episode 5
Episode 5
December 31, 2021
Su-yeol searches high and low to prove Hui-gyeom's innocence. But the deeper he dives into the case, the closer he comes to falling into a trap.
Episode 6
Episode 6
January 1, 2022
Su-yeol reopens a closed case. He teams up with K to investigate quietly and uncovers the opponent's weakness. Meanwhile, the body count grows.
Episode 7
Episode 7
January 7, 2022
Su-yeol and Hui-gyeom shift focus to the head of the drug cartel. Ms. Yong threatens the police to get the seized assets back in her hands.
Episode 8
Episode 8
January 8, 2022
Su-yeol learns that K is closely linked to his childhood trauma. A girl shows up at the police station, delirious and covered in someone else's blood.
Episode 9
Episode 9
January 14, 2022
When bits of his memory return, Su-yeol reexamines the murder of his father. Finding similar cases, he learns one person was involved in all of them.
Episode 10
Episode 10
January 21, 2022
As the identity of X comes to light, his deranged schemes pick up pace. He comes between Su-yeol and K by revealing K's murderous instincts.
Episode 11
Episode 11
January 22, 2022
Su-yeol visits Shin Ju-hyeok to seek treatment, but unleashes a very angry K instead. A victim opens up after an attempted suicide.
Episode 12
Episode 12
January 28, 2022
Su-yeol's hunt for the truth endangers those around him. He has a final face-off with the crazed killer at the place where it all began.