Season 1
12 episodes
1. Case 1 - The Night Life
1. Case 1 - The Night Life
A former detective forms his own private investigative agency after being betrayed by his girlfriend and fellow officer. He meets Han Gyeo Wool, a pickpocket with an interesting case involving her brother and a black market for blood.
2. Case 2 - 24 Hours
2. Case 2 - 24 Hours
Han Gyeo Wool packs up her bags and moves in with the detectives, to their dismay. With her on the team, they're thrown into a case that they must solve within 24 hours, or else.
3. Case 3 - The Dragon Falls Asleep
3. Case 3 - The Dragon Falls Asleep
An old police friends asks Yoon San to look into the case of her newly-deceased father's encrypted will. In investigating her father's past, he finds startling links to his own.
4. Case 4 - Waiting In The Dark
4. Case 4 - Waiting In The Dark
The team gets a call from a blind woman who thinks that her brother has been wrongfully convicted of murders to which he has admitted committing. The case unfurls rapidly, and both San and Gyeo Wool just might be connected.
5. Case 5 - The Actress Must Die to Live
5. Case 5 - The Actress Must Die to Live
An actress' sister comes to the team, asking for incognito protection. San thinks that the culprit could be right next to them, on set.
6. Case 6 - The Girl I Killed
6. Case 6 - The Girl I Killed
The same day that Goo Hyung receives an invitation to a class reunion, a former classmate shows up at his door. She wants the gang to solve an old buried mystery, one that could explain some of Goo Hyung's past.
7. Case 7 - The Night Client
7. Case 7 - The Night Client
Yoon San is given an ultimatum, with no time to think of his decision. Goo Hyung and Gyeo Wool party at a club all night, into the morning.
8. Case 8 - Judgment of the Soul
8. Case 8 - Judgment of the Soul
Dr. Hwang's sister appears to be possessed by a spirit. Yoon San spots a mysterious man following him. The team uncovers darkness from Dr. Hwang's past.
9. Case 9 - The Broadcast of Death
9. Case 9 - The Broadcast of Death
Yoon San and Goo Hyung are hard at work rebuilding the house, when they receive a call about an internet horror case. Detective Park has a secret.
10. Case 10 - The Food Chain of Evil
10. Case 10 - The Food Chain of Evil
Yoon San discovers surveillance footage showing that Yoo Jin is alive. The events from five years ago unfold.
11. Case 11 - In A Broken World
11. Case 11 - In A Broken World
Yoon San can't help but act emotionally in his efforts to save Yoo Jin. His decisions lead to the unthinkable, and Goo Hyung is caught in the crossfire. Gyeo Wool is left out of the action.
12. Case 12 - Return Of The Night...
12. Case 12 - Return Of The Night...
Yoon San gets himself and Yoo Jin to rural safety, but that doesn't stop his friends and his foes from continuing to look for them. At the end of the road, sacrifices need to be made.