Season 1
April 11, 2014
A police detective strives to clear his deceased father's name by catching the real serial killer who terrorized the country 20 years ago.
20 Episodes
Episodes
Episode 1
April 11, 2014
Mu-yeom who became a detective for his father, receives news like a nightmare.
Episode 2
April 12, 2014
Hearing something suspicious about the body of a murder case, Mu-yeom rushes to the crime scene.
Episode 3
April 25, 2014
It's reported that the first case is the act of Gabdong and there will be a second case of murder.
Episode 4
April 26, 2014
Mu-yeom is arrested as a criminal, and Yang suggests to compare the DNA of Gabdong and Mu-yeom.
Episode 5
May 2, 2014
Chief Yang meets Maria and thinks of a girl he met at the scene for a case from a while ago.
Episode 6
May 3, 2014
Mu-yeom suspects Tae-oh as Gabdong. Tae-oh lets out the story of his dead father to Maria.
Episode 7
May 9, 2014
The civilians blast anger and attack the police for failing at preventing the fourth case.
Episode 8
May 10, 2014
Mu-yeom kidnaps Ji-ul and tracks down Tae-oh, with the predicted date for a fifth case approaching.
Episode 9
May 16, 2014
After finding a corpse, Mu-yeom runs at Tae-oh, and Maria witnesses something shocking.
Episode 10
May 17, 2014
A phone call rings from the real Gabdong. Mu-yeom finally gets to know the true identity of Gabdong.
Episode 11
May 23, 2014
Gabdong is finally caught. Mu-yeom starts the interrogation and goes to get his shut mouth talking.
Episode 12
May 24, 2014
The plane the murder happened at, which Tae-oh was in, makes a flyback.
Episode 13
May 30, 2014
Tae-oh confesses his crimes, and Maria is shocked after finding out that Gabdong's probably dead.
Episode 14
May 31, 2014
After finishing the montage, Maria turns the young Gabdong montage into Gabdong of the present.
Episode 15
June 6, 2014
Mu-yeom and Tae-oh, neither one of them slows down and races to the end of the cliff.
Episode 16
June 7, 2014
Mu-yeom interrogates to prove Do-hyeok as Gabdong. He gets closer to the secret of the Murder case.
Episode 17
June 13, 2014
While searching Do-hyeok's house, Mu-yeom finds a suspicious picture frame of the Eiffel Tower.
Episode 18
June 14, 2014
Tae-oh starts a deal between Do-hyeok and Maria. Mu-yeom notices and makes the two Gabdong gather.
Episode 19
June 20, 2014
A gunshot rings at the pool Mu-yeom and Do-hyeok are at, and someone falls bleeding.
Episode 20
June 21, 2014
The trial of the two Gabdong finishes, with hard choices to make, the two fall into a great dilemma.
