S1 • E1
Jung Woo and his team have been investigating a serial bank robbery case for months, but they're told to dig into the so-called forewarned murder case. Unwillingly, they go to a club where the forewarned victim is supposed to be.
S1 • E2
Jung Woo decodes the messages that the murderer sent and finds a lead. She figures out one common factor among the victims- they were all smiling the moment they died.
S1 • E3
Jamie finds Jung Woo suspicious as he seems to be hiding a secret. Despite the events that make Jung Woo suspicious, Hye Won puts her full trust in Jung Woo. Another forewarning arrives!!
S1 • E4
Jung Woo and Jamie find out that they're both from White Night Village. Jung Woo acts like White Night Village has nothing to do with the forewarned murder cases, but Jamie thinks differently.
S1 • E5
Jung Woo saves the people who were trapped in the fire and instantly becomes a national hero. Jamie wakes up in the hospital and she's about to receive treatment by force.
S1 • E6
Ji Wook realizes that Son Min Ho is in danger, so he tries to escape from the safehouse with him. However, Jung Woo stops them and attacks Son Min Ho.
S1 • E7
Everyone including Hye Won is shocked by the fact that Jung Woo is the culprit of the forewarned murder cases. For those who know the truth behind White Night Village are going after Jung Woo.
S1 • E8
The truth behind the forewarning murders starts to come up to the surface. Jamie and Hye Won keep following the evidence related to what happened in White Night Village 28 years ago.
S1 • E9
Jung Woo continues to search for the secret lab. He runs into kids at an orphanage who talk about several kids being adopted by new families at the same time. Jung Woo thinks there's something fishy going on in that facility.
S1 • E10
Jung Woo witnesses that a group of children is forced to get in a black van in front of Seoul Hangang Welfare Center and taken to somewhere, and he starts to follow the van.
S1 • E11
Jamie sets off for White Night Village with Ji Wook to recollect her memories of what happened in the village. But then, a new warning arrives at Ji Wook's office.
S1 • E12
Jamie finally arrives at the very place she abhors to even stay for a second. At the White Night Village, she and Ji Wook search for clues that might trigger Jamie's lost memories.
S1 • E13
Jamie realizes that Jung Woo is her twin brother, the so-called monster who saved her life. After saving Jamie, Jung Woo continues with the investigation to find the location of the secret lab.
S1 • E14
Hye Won gets abducted and held hostage. Jung Woo finally finds the secret lab and goes inside. But there's someone who's watching him in the building.
S1 • E15
When Do Jung-woo sees Cho Hyun-hee after 28 years, she is shockingly unchanged from her old self.
S1 • E16
With the final roll of the dice, Do Jung-woo's final battle with the Baekya Foundation begins.
Do Jung-woo
Moon Jae-Woong
Jang Ji Wan [Police]
Lee Taek-jo
Hwang Byeong-cheol
Lee Ji-wook
Yoon Seok Pil [Police]
Sun Geul-nyeo
Baek Hyun Su
Prisoner