Chief Producer
Director
Producer
Screenwriter
Main Role
- Kim Rae WonJin Ho GaeMain Role
- Son Ho JunBong Do JinMain Role
- Gong Seung YeonSong SeolMain Role
Support Role
- Son Ji YoonYoon Hong [NFS]Support Role
- Oh Eui ShikKang Do Ha [NFS]Support Role
- Kang Gi DoongGong Myung Pil [Ho Gae’s partner]Support Role
- Seo Hyun ChulBaek Cham [Detective team leader]Support Role
- Woo Mi HwaDok Ko Soon [Taewon fire stn.]Support Role
- Ji WooBong An Na [Scientific Investigation Team / Do Jin’s sister]Support Role
- Baek Eun HyeWoo Sam Soon [Scientific Investigation Team]Support Role
- Jung Jin WooChoi Ki Soo [Taewon fire stn.]Support Role
- Lee Woo JeHa Dong Woo [Taewon fire stn.]Support Role
- Kang Seo HaKang Seo Ha [Taewon fire stn.]Support Role
- Kwon Do HaKwon Do Ha [Taewon fire stn.]Support Role
- Baek In JooBaek In Joo [Taewon fire stn.]Support Role
- Cha Yoon HoLee Ji Hoon [Taewon fire stn.]Support Role
- Bae Kang MinMin [Detective]Support Role
- Jo Seung YunJin Cheol Joong [Prosecutor / Jin Ho Gae's father]Support Role
- Lee Do YupMa Tae HwaSupport Role
- Jo Hee BongYang Chi Young [Lawyer]Support Role
- Yoo Byung HoonMoon Young Soo [Detective]Support Role
- Jun Joon Woo[Medical examiner]Support Role
- Kim Hae Ri[Medical examiner]Support Role
- Park Joo YoungPark Myung Hee [NFS]Support Role
Guest Role
- Jeon Sung WooHan Se Jin [NFS forensic professor] (Ep. 8-12)Guest Role
- Seo Jae KyuYeom Sang Gu [Prosecutor] (Ep. 4, 8)Guest Role
- Lee Ho YeolIm Sun Yeol [Detective] (Ep. 10-11)Guest Role
- Kim Jung HoCho Il Joon (Ep. 1, 4, 11)Guest Role
- Choi Jae HwanChoi Do Joon [Courier] (Ep. 1-2)Guest Role
- Park Seo YeonChoi Na Ri [Choi Do Joon's daughter] (Ep. 1-2)Guest Role
- Choi Won YoungHa Young Doo [First serial arsonist] (Ep. 1)Guest Role
- Do Ki Suk[Criminal] (Ep. 1)Guest Role
- Oh Kyung Min[Factory manager] (Ep. 1)Guest Role
- Chae Yoon Hee[Restaurant owner] (Ep. 1)Guest Role
- Ryu Je Seung[Majung policeman] (Ep. 1)Guest Role
- Park Jin Soo[Majung policeman] (Ep. 1)Guest Role
- Ji Sung Geun[Building security guard] (Ep. 1-2)Guest Role
- Ha Yi An[Na Ri's friend] (Ep. 1-2)Guest Role
- Jeon Gook HwanMa Joong Do [Congressman / Ma Tae Hwa's father] (Ep. 10)Guest Role
- Cha Yong HakPark Ho Yeon [Rapid Intervention Team] (Ep. 2, 10)Guest Role
- Hwang Young HeeHee Sook [Seol's adoptive mother / Nurse] (Ep. 2-3, 5-6)Guest Role
- Yang Jong WookCha Jae Hee [Doctor] (Ep. 2)Guest Role
- Lee Hwa JungHan Soo Jin [Doctor] (Ep. 2)Guest Role
- Kim Sae Rom[Nurse] (Ep. 2)Guest Role
- Yang Hee WonWoo Hyuk (Ep. 2-3)Guest Role
- Jung Ji Hoon[Woo Hyuk's friend] (Ep. 2-3)Guest Role
- Shin Hyun Sil[Gangster] (Ep. 7-9)Guest Role
- Yoon Sang HwaYang Sang Man [Dochoon Villa fire victim] (Ep. 3-4)Guest Role
- Ahn Kil KangNam Seok Gu [Chief of police] (Ep. 4, 12)Guest Role
- Lee Ji HaGong Ju Soon [Princess Granny / Recycler woman] (Ep. 4-5)Guest Role
- Jang Hyun SungJang Sung Jae [Prosecutor] (Ep. 11-12)Guest Role
- Jung Jin GakCheon Tae Jin [Beomdongyeong faction leader] (Ep. 7-8)Guest Role
- Jo Duk HyunJudge An (Ep. 8)Guest Role
- Choi Moo SungSeok Moon Gu [Mi Jung's father] (Ep. 9-11)Guest Role
- Ahn Se BinYoo Jung (Ep. 4-6)Guest Role
- Seok Min Gi[Woo Hyuk's friend] (Ep.2-3)Guest Role
- Hong Seo Joon[Commander] (Ep. 3)Guest Role
- Han Kyu WonHan Yoon Jae [Specialist from EOD] (Ep. 3-4, 11)Guest Role
- Park Si WonBong Do Jin [Young] (Ep. 3)Guest Role
- Hong Dong YoungKang Do Ha (Young) [Bong Do Jin's friend] (Ep. 3)Guest Role
- Jo Young Gyu[Mapung Hospital doctor] (Ep.3, 7)Guest Role
- Jeong Wook[Chief firefighter] (Ep.3)Guest Role
- Hong Woo JinPark Yong Soo [Unit 301’s resident] (Ep. 5-6)Guest Role
- Baek Sung ChulPark Hong Jun [Prosecutor] (Ep. 4, 7-8, 11)Guest Role
- Kwon Oh Kyung[Maintenance manager] (Ep. 4-6)Guest Role
- Hwang Jung MinYong Soon Bok [Spring Lady] (Ep. 4-6)Guest Role
- Kim Dong SooKim Soo Yong [Security guard] (Ep. 5-6)Guest Role
- Park Sang Hoon[Park Yong Soo’s son] (Ep. 5-6)Guest Role
- Noh Haeng Ha[Park Yong Soo’s wife] (Ep. 5)Guest Role
- Jung Soo Han[Bailiff] (Ep. 5)Guest Role
- Hong Suk BinKong Doo Eon [Unit 104’s resident] (Ep. 5-6)Guest Role
- Bo Ra NaKwak Soon Ja [Unit 503’s resident] (Ep. 5)Guest Role
- Yoon JooKim Young Joo [Unit 202’s resident] (Ep. 5-6)Guest Role
- Im Ye EunKim Hyun A (Ep. 6)Guest Role
- Kim So Woon[Real estate agent] (Ep. 6)Guest Role
- Choi Yoon Bum[Kim Young Joo’s ex-husband] (Ep. 6)Guest Role
- Kim Jae Ho[Detective] (Ep. 7-11)Guest Role
- Lee Ji Hoon[Gangster] (Ep. 7-8)Guest Role
- Kwak Jin Seok[Gangster] (Ep. 7-9)Guest Role
- Park Sang Hwi[Prison officer] (Ep.7)Guest Role
- Ahn Ji Hye[Detective Sun Yeol's wife] (Ep. 7, 12)Guest Role
- Min Sung WookGong Young Doo (Ep. 7-8)Guest Role
- Jung Sun ChulKim Dae Moo [Loan shark boss] (Ep. 8)Guest Role
- Lee Soo Yong[Gangster] (Ep. 7-8)Guest Role
- Ko Yu NiWoo Sun A [Woo Sam Soon's daughter] (Ep.7-8)Guest Role
- Lee Hyo BiWoo Sun Ju [Woo Sam Soon's daughter] (Ep.7-8)Guest Role
- Lee Chang Jik[Attorney] (Ep.8)Guest Role
- Lee Dong Soo[Udadak Chicken worker] (Ep.8)Guest Role
- Lee Jung Eun[Seok Moon Gu's wife / Mi Jung's mother] (Ep. 9)Guest Role
- Hwang Man Ik[Technician] (Ep. 9-10)Guest Role
- Kim Wang Geun[Decoy patient] (Ep. 9)Guest Role
- Kim Woo Hyeok[Tax officer] (Ep. 9)Guest Role
- Kim Sang Il[Hospital director] (Ep. 9)Guest Role
- Park Min JungSeok Mi Jung (Ep. 9)Guest Role
- Kim Mi HyeHan Sook Ja [Housemaid] (Ep. 10)Guest Role
- Lee Jung HunSong Jae Jun [Judge] (Ep. 10, 12)Guest Role
- Ham Jin Sung[Prison guard]Guest Role
- Choi Hee JinBang Ja Kyung [Song Jae Jun's wife] (Ep. 10)Guest Role
- Im Seung Gyu[Crime scene investigator]Guest Role
- Park Jeong Seo[CCTV repairman] (Ep. 11)Guest Role
- Park Eun Byeol[Little girl] (Ep. 4)Guest Role
- Kim Seo HaAhn Jun Seo (Ep. 7-8)Guest Role
- Kwon Je InHwang Jung SoonGuest Role
- Yoo Dok Hyun[Restaurant owner] (Ep. 1)Guest Role
- Shin Ki JoonSong Min Jun [Song Jae Jun's son] (Ep. 10)Guest Role
- Choi Hee Do[Post office worker] (Ep. 10)Guest Role
- Seo Dong Won[Rental car company owner] (Ep. 10)Guest Role
- Darcy Paquet[FBI agent] (Ep. 12)Guest Role
- Yang Dong Tak[Makeup artist] (Ep. 12)Guest Role
- Kim Si On[Im Sun Yeol’s daughter] (Ep. 12)Guest Role
Unknown
- Kim Seo Ha Unknown
- Seo Seung Won Unknown
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