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