Gap Dong

Nearly 20 years ago, Ha Mu Yeom's father was a suspect in the Gap Dong serial murder case in Iltan, and the primary focus of detective Yang Chul Gon. Mu Yeom becomes a detective to… read more

Ryu Tae Oh, a patient at the Iltan mental hospital shows admiration for another patient claiming to be Gap Dong. Tae Oh is released and finds a job as a barista. His psychiatrist Oh… read more

Information is published regarding the Gap Dong case, with claims that it was provided by Mu Yeom. Mu Yeom and Oh Maria both follow this lead believing the information is a taunt by… read more

Chul Gon arrests Mu Yeom after he is found at the scene of the second crime. Maria asks her stepfather, the primary profiler on the original Gap Dong case, his opinion on Mu Yeom's… read more

Mu Yeom makes a false confession to the 2nd murder for ulterior purposes, but some inconsistencies have Chul Gon starting to believe they may have similar motivations. Chul Gon and… read more

Tae Oh lets Mu Yeom see his true colors and Ji Wool's webtoon provides an important clue. The game of cat and mouse begins in earnest. Tae Oh enlists an unwilling participant and uses… read more

The game of Russian Roulette with Tae Oh ends when Chul Gon shoots the gun out of Mu Yeom's hand. The bullet ricochets hitting Mu Yeom in the head. As Mu Yeom recovers, Tae Oh taunts… read more

Ji Wool falls into Tae Oh's grasp, and he calls Mu Yeom from her phone to taunt him with her peril. Mu Yeom becomes desperate to save Ji Wool from becoming the next victim, realizing… read more

In the wake of the 5th murder Chul Gon is replaced as Chief and then suffers the loss of his daughter. Tae Oh's mother returns to Korea and makes him an offer. After inmate Choi is… read more

Tae Oh is saved, thanks to Mu Yeom, after Maria calls him confess her conflicted desire to let Tae Oh die. As the Ryu family manipulates events for their benefit, Tae Oh continues… read more

Mu Yeom stops Ho Seok from killing Ji Wool's mother, but evidence from the past rules Ho Seok out as the real Gap Dong. Mu Yeom derides Tae Oh for being manipulated by a 'Loser' fake.… read more

Mu Yeom confronts Chul Gon about his bloody badge from the 7th case and Chul Gon shares his accidental involvement, revealing a 20 year old confession. Tae Oh is arrested for the 7th… read more

Tae Oh confesses to Maria about his crimes in exchange for her telling him about the 9th murder. He hopes to learn how Gap Dong was able to stop the impulse to kill. Old buried skeletal… read more

Maria's memories return and a sketch is made, but she can't figure out why the face seems oddly familiar. The writer and recipient of the love letter is discovered which points Mu… read more

Tae Oh loses a game of chicken against Mu Yeom and agrees to help catch Gap Dong. Tae Oh proposes they tamper with the DNA evidence, which temporarily puts Maria and Mu Yeom on two… read more

Chief Cha is arrested and held for 48 hours as everyone looks for a way to get around the statute of limitations. Mu Yeom shares with Cha his theory that Gap Dong's signature and subsequent… read more

Suspecting a picture of the Eiffel Tower to be a clue, Mu-yeom tries to uncover its hidden message. Meanwhile, his condition is worsening. (Source: Netflix)

Given the mess he's already in, Tae-oh weighs whose side will benefit him the most. Do-hyeok undergoes a thorough psychological evaluation. (Source: Netflix)

Hearing the gunshot, police Lee Hyung-nyeon hurries into the swimming pool. Tae-oh and Ji-wool find out about each other's true intentions. (Source: Netflix)

Mu-yeom discovers a clue in Ji-wool's cartoon story that may reveal Do-hyeok's secret. Despite Mu-yeom's advice, Tae-oh meets with Do-hyeok. (Source: Netflix)