The series
The heat is on in Investigation 5, an undercover police unit specializing in thwarting violent crimes. Led by Superintendent Jang Moon Won, this team of young and elite officers, including Cha Gun Woo, Jang Min Joo, and Lee Won Jong, assume new identities and infiltrate dangerous crime syndicates. With only their wits and poker faces at their disposal, can the team complete their missions without blowing their covers in hostile territory?
Episodes
Season 1 · 16 episodes · 2015
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Episode 116 Jun 20151h 5m
Episode 1
After his partner is killed, Gun Woo joins the elite undercover unit the Criminal Investigation Team and goes deep undercover to recover an old friend.
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Episode 217 Jun 20151h 5m
Episode 2
Though Gun Woo is suspected of being a cop, the gang brings him along on a job. The Criminal Investigation Team finds Hae imprisoned by the gang, but he insists on staying to complete the mission.
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Episode 322 Jun 20151h 5m
Episode 3
Min Tae In finds a way to extract himself and prove Gun Woo's loyalty. Complications ensue as as the criminals attempt to steal the hologram.
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Episode 423 Jun 20151h 5m
Episode 4
Gun Woo officially joins the team and puts his investigation skills to use as they track a hacker known as the Mermaid.
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Episode 529 Jun 20151h 5m
Episode 5
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Episode 630 Jun 20151h 5m
Episode 6
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Episode 76 Jul 20151h 5m
Episode 7
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Episode 87 Jul 20151h 5m
Episode 8
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Episode 913 Jul 20151h 5m
Episode 9
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Episode 1014 Jul 20151h 5m
Episode 10
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Episode 1120 Jul 20151h 5m
Episode 11
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Episode 1221 Jul 20151h 5m
Episode 12
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Episode 1327 Jul 20151h 5m
Episode 13
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Episode 1428 Jul 20151h 5m
Episode 14
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Episode 153 Aug 20151h 5m
Episode 15
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Episode 164 Aug 20151h 5m
Episode 16
Cast
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