S1 • E1
Da Il and Sang Seob run a detective agency that is on the verge of going out of business. One day, a client comes to them, asking to find a missing child. However, the more Da Il digs, the stranger the case becomes.
S1 • E2
Dall suspects the teacher at the academy as the person who took the three kids. While working on the case at the office, he gets paid a visit by an aspiring detective. However, after a strange turn of events, Da Il meets a tragic end
S1 • E3
Yeo Wool thinks it's strange that Da ll disappeared from the crime scene, leaving the kids behind. The police investigating the case also find the case strange. Meanwhile, Yeo Wool keeps looking for Da ll and worries something happened.
S1 • E4
Da ll comes to Yeo Wool's house and asks her about what she knows. From Yeo Wool's story, he learns more about the mysterious woman he saw. Together, they start looking for clues.
S1 • E5
The manager of the restaurant Yi Rang used to work at jumps off a building after saying something ominous. Da ll can't help but feel sympathy toward Yeo Woo because he knows how she must be feeling right now. The woman in red is coming.
S1 • E6
Dall gets a feeling that Yi Rang's hearing aid will provide a clue to find out more about the woman in red. With Yeo Wool, he follows the lead. The woman in red's next target is the principal of the pre-school.
S1 • E7
In order to pursue the woman in red, Da ll realizes that he'll need help from Sang Seob. Yeo Wool takes Sang Seob to the location where Da ll was buried, but Sang Seob doesn't believe anything she says.
S1 • E8
When Sang Seob finds Da Il's identification tag, he accepts the fact that Da ll is dead Da ll and Sang Seob work together to find leads with the help of Yeo Wool. Meanwhile, the woman in red gives Da ll a warning.
S1 • E9
The woman in red warns Da ll about how she'll kill everyone that loves him. Sang Seob becomes the next target. While working on the case, Sang Seob gets attacked. Da ll tries to find a way to help Sang Seob.
S1 • E10
It turns out that the police officer Sang Seob was looking for killed himself 20 years ago. Da Il senses that Sang Seob is in imminent danger. They must find him before it's too late.
S1 • E11
The team rushes to the hospital where Sunwoo Hye is supposedly hospitalized. However, they quickly discover that she had already made a run for it.
S1 • E12
Yeo Wool and Dae Il go and meet a shaman hoping to gain information on how to kill a fetch. Knowing that they would get into trouble, Chae Won goes to help them and ends up saving them in the nick of time.
S1 • E13
Da Il learns how to touch objects and stabs Hye with a knife before Yeo Wool does. Hye becomes a living person and runs away from the hospital after killing four medical staff, and Yeo Wool thinks it all happened because of her.
S1 • E14
Jeong Dae asks Yeo Wool to tell the truth as her fingerprint was found at the crime scene. Yeo Wool tries to tell Jeong Dae that she was the one who stabbed Hye, but Da Il tells her to deny it.
S1 • E15
The team must take a different approach now that Sunwoo Hye has a body. With a body that can move, her scope of action has broadened. Meanwhile, Da ll goes to the interrogation room where Deok Joong is being held.
S1 • E16
Sunwoo Hye is trying to kill hundreds of lives by controlling Gyeol. The team must find out why and how she is intending on killing those people. Da ll remembers something about Sunwoo Hye and tries to connect the dots.
S1 • E17
Just when Gyeol is about to stab himself, Da Il disappears. Sunwoo Hye goes to Deok Joong and asks him what really happened to Da ll. Not knowing if Da ll will appear again, Yeo Wool waits for him.
S1 • E18
Sunwoo Hye relentlessly harasses Yeo Wool. She tries to control Gyeol's feeling of guilt in order to get rid of her. Meanwhile, the team tries to find out where Da Il's body is being kept.
S1 • E19
The team arrives at the house they located, but Da ll is nowhere to be found and they only find traces of him. Sunwoo Hye confronts Yeo Wool and gives her an opportunity to take revenge. Sang Seob comes to help and falls into a trap.
S1 • E20
A reporter who seems to know something about Da ll pays the team a visit. Sunwoo Hye is tracking down her own mother by using Gyeol. Yeo Wool and Da Il are always a step behind Sunwoo Hye, but they find a lead at the pharmacy.
S1 • E21
Jeong Dae arrives in time to save Yeo Wool. Yeo Wool is worried that Da ll might turn into an evil spirit forever. Upon meeting her mother, Sunwoo Hye asks her why she never came back.
S1 • E22
The reporter publishes an article about Da Il which gets everyone interested. Da Il goes to Jeong Dae to ask for a favor. The team finds the missing link that will help them find Da Il's body.
S1 • E23
After talking with Sunwoo Hye, Da Il's anger grows even bigger. The men who are being controlled by Sunwoo Hye try to take the hearing aid from Yeo Wool. Da Il goes after the source of his anger.
S1 • E24
Along with finding Da Il's body, Sunwoo Hye also wants to possess Yeo Wool. Da ll must find a way to get rid of her without harming Yeo Wool. Meanwhile, Jeong Dae is looking for Da Il's body on his own.
S1 • E25
Da ll arrives at the grape farm and finds his body. Yeo Wool manages to find where Da lI went and goes after him, but Sunwoo Hye is already there. Chae Won confronts Sunwoo Hye and tries to buy some time for Jeong Dae.
S1 • E26
Sunwoo Hye's goal is to kill everyone around Yeo Wool and Da Il. Jeong Dae tells Yeo Wool that it'll be better if he doesn't know anything about her plans. Meanwhile, Gyeol takes Sunwoo Hye to Da Il's body.
S1 • E27
After harming Gyeol, Sunwoo Hye attempts to flee. Da ll leaves Gyeol to Yeo Wool and goes after Sunwoo Hye. The team finally finds Da ll's body, but it's in a very bad condition.
S1 • E28
Sunwoo Hye takes Attorney Baek hostage and escapes from where she was being confined. The people who have suffered because of Sunwoo Hye all gather forces to track her down.
S1 • E29
In order to stop people from getting hurt more, Yeo Wool decides to let Sunwoo Hye possess her body. Da ll asks her not to, but Yeo Wool is not willing to change her mind.
S1 • E30
Yeo Wool is back home. After getting some rest, she heads to the hospital where Da ll is being treated. However, Da Il thinks it's not over yet.
S1 • E31
order to protect the people he loves, Da ll chooses to sacrifice himself. Yeo Wool remembers him as the person who tried to understand Sunwoo Hye until the last moment. When she goes to bed one night, Yi Rang comes to her.
S1 • E32
After Da Il's death, people go back to their lives and Yeo Wool returns after a long journey. Upon her arrival, Yeo Wool witnesses something strange yet familiar. Sunwoo Hye is gone, but there are still threats out there.
Jung Yeo-wool
Seon Woo-hye
Lee Da-il
Han Sang-seop
Baek Da-hye
Gil Chae-won
Park Jung-dae
Sun Woo-Hye