Four elite police officers are recruited as part of a secret police unit, Investigation 5, that was formed to battle violent crimes.
Sous-titres: English
Saison 1
S01:E01 - Episode 1
Moo-won brings Gun-woo to the investigative squad to infiltrate Jung's syndicate.
S01:E02 - Episode 2
Moo-won brings Gun-woo to the investigative squad to infiltrate Jung's syndicate.
S01:E03 - Episode 3
The investigative squad and Gun-woo implement a secret plan to chase Jung.
S01:E04 - Episode 4
With Gun-woo, the team investigates a murder incident, but falls into an unexpected trap.
S01:E05 - Episode 5
A dead body is found and Min-ju gets in danger of losing her life.
S01:E06 - Episode 6
Dae-hyun makes a tempting offer to Tae-in. Meanwhile, Moo-won gets threatened by an unknown group.
S01:E07 - Episode 7
Moo-won becomes a criminal all of sudden and the team strives to prove his innocence.
S01:E08 - Episode 8
The Ghost aims for a lethal weapon. Gun-woo is enraged at In-ho and suddenly turns reckless.
S01:E09 - Episode 9
Gun-woo suddenly disappears. While the team strives to find him, Gun-woo makes a deal with Se-jin.
S01:E10 - Episode 10
Gun-woo makes a huge mistake and the investigative team makes a scenario to chase Nam In-ho.
S01:E11 - Episode 11
The hidden truth of Moo-won is revealed, and the team finally gets the chance to find the Ghost.
S01:E12 - Episode 12
The tense atmosphere fills the charity party and the team gets involved in an unexpected incident.
S01:E13 - Episode 13
As the investigative team gets closer to the Ghost, the squad faces the most shocking truth.
S01:E14 - Episode 14
The team finds out the hidden truth of the Ghost. Meanwhile, Moo-won and Min-ju fall in a trap.
S01:E15 - Episode 15
The team enters the Ghost's hideout and gets shocked to face Tae-in in a miserable figure.
S01:E16 - Episode 16
The squad resolves not to let Tae-in die in vain. Meanwhile, Dae-hyun makes an offer to Moo-won.