About this season
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 (16)
1. Episode 1
Aired 16 June 2015 • 65 min
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.
2. Episode 2
Aired 17 June 2015 • 65 min
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.
3. Episode 3
Aired 22 June 2015 • 65 min
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.
4. Episode 4
Aired 23 June 2015 • 65 min
Gun Woo officially joins the team and puts his investigation skills to use as they track a hacker known as the Mermaid.
5. Episode 5
Aired 29 June 2015 • 65 min
6. Episode 6
Aired 30 June 2015 • 65 min
7. Episode 7
Aired 6 July 2015 • 65 min
8. Episode 8
Aired 7 July 2015 • 65 min
9. Episode 9
Aired 13 July 2015 • 65 min
10. Episode 10
Aired 14 July 2015 • 65 min
11. Episode 11
Aired 20 July 2015 • 65 min
12. Episode 12
Aired 21 July 2015 • 65 min
13. Episode 13
Aired 27 July 2015 • 65 min
14. Episode 14
Aired 28 July 2015 • 65 min
15. Episode 15
Aired 3 August 2015 • 65 min
16. Episode 16
Aired 4 August 2015 • 65 min