Season 1
16 episodes
0 min. per episode
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Haunted by a tragic past, three investigators unravel dark secrets, risking everything to expose a hidden truth that binds them.
Trailer
Episodes
Traffic police Young-goon fires a gun while chasing a red light runner and is investigated by WAIS.
Byung-gil says that he was forced to kidnap and makes a deal with Young-goon, Chi-kwang and Tae-joo.
Tae-joo realizes Hyo-jung's kidney transplant is related to the organ sale case and takes in charge.
Young-goon is injured from prosecutor Lee's plan to catch Mr. Kim. The team continues investigating.
Jae-myung opens his hand to reveal a secret to Young-goon, who finally came out to meet him.
The lives of Do Chi Gwang, Kim Young Koon and Han Tae Joo were destroyed by a tragic affair. They became members of an internal affairs investigation team for the police and they try to dig up the truth on who is behind the tragic affair.