Episode 4
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.
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More from this season
S1 E1
Episode 1
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.
S1 E2
Episode 2
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.
S1 E3
Episode 3
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.
S1 E5
Episode 5
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.