Director
Producer
Screenwriter
Main Role
- Song Il Gook Main Role
- Lee Jong Hyuk Main Role
- Song Ji HyoJo Min JooMain Role
- Park Sun Young Main Role
Support Role
- Kim JoonShin Dong SukSupport Role
- Sung Ji RuNam Tae ShikSupport Role
- Sun Woo SunJin Mi Sook (Ep. 1-7)Support Role
- Kim Sun KyungIm Kyeong Eun (Ep.9-16)Support Role
- Jang Hang SunTeam leader KwonSupport Role
- Baek Seung HeeShin Yoo Mi [Min Joo's friend]Support Role
- Sun Wook HyunPetit JangSupport Role
- Oh YongReporter NamSupport Role
- Park Jung WooKim Cheol MinSupport Role
- Kim Yoo BinPark Hae InSupport Role
- Park Yong SooPark Young SeokSupport Role
- Song Min HyungDeputy HeoSupport Role
- Kim Gyu ChulJo Sang TaeSupport Role
- Choi In Sook[Jo Min Joo's mother]Support Role
- Uhm Hyo SubHong Seok-youngSupport Role
- Choi Eun SukYoo Myung CheolSupport Role
Guest Role
- Jang Nam YulMa Jong Pil (Ep. 1)Guest Role
- Jung Tae Ho(Ep.1)Guest Role
- Jo Jae YoonYang Do Soo (Ep. 1)Guest Role
- Hwang Kwang Hee[Se Hyuk's former student]Guest Role
- Sung Chan Ho[Victim's father] (Ep. 1)Guest Role
- Kang Hae InOh Eun Ha (Ep.2)Guest Role
- Lee Min WooLee Dong Suk (Ep.1-3)Guest Role
- Yang Joo HoChoi Tae Soo (Ep.1-3)Guest Role
- Choi MinByun Sang Tae (Ep.1-3)Guest Role
- Chae In WooKim Suk Gyu (Ep.3-4)Guest Role
- Jang Joon Hak(Autopsy) (Ep.3)Guest Role
- Park Joon HyukKang Sung Chul (Ep.3-4)Guest Role
- Kim Kyung RyongMr. Min (Ep.3-4)Guest Role
- Lee Yun JuSeol Hee (Ep.3-4)Guest Role
- Oh Ji YeonOh Eun-joo (Ep.3)Guest Role
- Jung Ho Geun[Internal investigation] (Ep.4)Guest Role
- Son Yeo EunCha Soo Yun (Ep.5-7)Guest Role
- Choo So YoungYoon Sung Hee (Ep.5-7)Guest Role
- Seo Kwon Soon[Yoon Sung Hee' mother] (Ep.5-7)Guest Role
- Geum Ho SukLee Joon-Soo (Ep.5-7)Guest Role
- Lee Young HoonKim Young-tae (Ep.5-7)Guest Role
- Heo Eun JungKim So Young (Ep. 7-8)Guest Role
- Kim Yoon HyeLee So Min (Ep.7-8)Guest Role
- Chae Min YoungHan Song Hee (Ep. 7-8)Guest Role
- Kim Min Chae[Kim So Young's mother] (Ep. 7)Guest Role
- EvanAlex Lee (Ep.7-8)Guest Role
- Cheon Young Min[Teenager Mi-sook] (Ep.7)Guest Role
- Yoo Pil Ran[Lee So Min's mother] (Ep.8)Guest Role
- Song Kyung Hwa[Han Song Hee's mother] (Ep. 8)Guest Role
- Song Shi YeonPark Eun Ah (Ep.9-10)Guest Role
- Lee Joo SukPark Byung Gwong (Ep.9-10)Guest Role
- Nam Myung RyulKang Man Soo (Ep.9-10)Guest Role
- Lee ElYoo Hye Mi (Ep.9-10)Guest Role
- In Sung Ho[Witness] (Ep.9-10)Guest Role
- Yoon Sun WooLee Youg Jun (Ep.11-12)Guest Role
- Shin Seon Hee[Young Jun's mother] (Ep. 11-12)Guest Role
- Seo Jung Wook[Psychiatric hospital's manager] (Ep.12)Guest Role
- Won Jong Rye[Il Do's mother] (Ep.13)Guest Role
- Uhm Hyun KyungSeo Hye Ran (Ep.13-14)Guest Role
- Kim Young HoonJi Young Ho (Ep.13-15)Guest Role
- Baek Yoon ShikBang Seong Jin (Ep.13-14)Guest Role
- Kim Gwang In[Bang Seong Jin's lawyer] (Ep.14)Guest Role
- Ra Hee Jung[Seo Hye Ran's neighbor] (Ep.13)Guest Role
- Lee Ju EunYoo-ri (Ep.13-14)Guest Role
- Yoon Jin Ho[Reporter] (Ep. 13-14)Guest Role
- Kim Seon Eun[Reporter] (Ep.13)Guest Role
- Shin Chi Young[Policeman] (Ep. 14)Guest Role
- Park Kyu JumKim Hong Tae [Serial Murder Detective] (Ep.15)Guest Role
- Kim Ri NaKim Jun Hee (Ep. 5-7)Guest Role
Unknown
- Lee Hui Sung Unknown
- Choi Ha Ho Unknown
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