Season 1

2014 · 20 episodes

A police detective strives to clear his deceased father's name by catching the real serial killer who terrorized the country 20 years ago.

1Episode 1Mu-yeom who became a detective for his father, receives news like a nightmare.
2Episode 2Hearing something suspicious about the body of a murder case, Mu-yeom rushes to the crime scene.
3Episode 3It's reported that the first case is the act of Gabdong and there will be a second case of murder.
4Episode 4Mu-yeom is arrested as a criminal, and Yang suggests to compare the DNA of Gabdong and Mu-yeom.
5Episode 5Chief Yang meets Maria and thinks of a girl he met at the scene for a case from a while ago.
6Episode 6Mu-yeom suspects Tae-oh as Gabdong. Tae-oh lets out the story of his dead father to Maria.
7Episode 7The civilians blast anger and attack the police for failing at preventing the fourth case.
8Episode 8Mu-yeom kidnaps Ji-ul and tracks down Tae-oh, with the predicted date for a fifth case approaching.
9Episode 9After finding a corpse, Mu-yeom runs at Tae-oh, and Maria witnesses something shocking.
10Episode 10A phone call rings from the real Gabdong. Mu-yeom finally gets to know the true identity of Gabdong.
11Episode 11Gabdong is finally caught. Mu-yeom starts the interrogation and goes to get his shut mouth talking.
12Episode 12The plane the murder happened at, which Tae-oh was in, makes a flyback.
13Episode 13Tae-oh confesses his crimes, and Maria is shocked after finding out that Gabdong's probably dead.
14Episode 14After finishing the montage, Maria turns the young Gabdong montage into Gabdong of the present.
15Episode 15Mu-yeom and Tae-oh, neither one of them slows down and races to the end of the cliff.
16Episode 16Mu-yeom interrogates to prove Do-hyeok as Gabdong. He gets closer to the secret of the Murder case.
17Episode 17While searching Do-hyeok's house, Mu-yeom finds a suspicious picture frame of the Eiffel Tower.
18Episode 18Tae-oh starts a deal between Do-hyeok and Maria. Mu-yeom notices and makes the two Gabdong gather.
19Episode 19A gunshot rings at the pool Mu-yeom and Do-hyeok are at, and someone falls bleeding.
20Episode 20The trial of the two Gabdong finishes, with hard choices to make, the two fall into a great dilemma.

Episodes