Composer
Director
Executive Producer
Screenwriter
Main Role
- Jung Yong Hwa Main Role
- Cha Tae Hyun Main Role
- Kwak Sun Young Main Role
- Ye Ji Won Main Role
Support Role
- Jung Dong Hwan Support Role
- Woo Hyun Support Role
- Kim Soo Jin Support Role
- Im Chul Hyung Support Role
- Jun Sung HwanOh Joon Seo [Shin Ha Roo's assistant]Support Role
- Lee Chang WookProfessor JinSupport Role
- Kim Ah Song Support Role
- Kim Jin SeoMoon Yong Jun [Reporter]Support Role
Guest Role
- Han Soo Yeon Guest Role
- Jang Ho Il Guest Role
- Moon Won Ju Guest Role
- Song Min Ji Guest Role
- Kim Kang Il Guest Role
- Park Ga Young[Reporter] (Ep.1-2)Guest Role
- Kim Nak Kyun[Prison guard] (Ep.2-3)Guest Role
- Park Sang HoonKim Ho Young (Ep.9-10)Guest Role
- Park Seon Woo[Publisher] (Ep.3)Guest Role
- Yoo Byung HoonLee Jong Koo (Ep.3-4)Guest Role
- Hong Ah ReumThoung Nguyen (Ep.3-4)Guest Role
- Jiyun Kim Huong[Thoung Nguyen's sister] (Ep.3-4)Guest Role
- Chris Chan[Factory worker] (Ep.3)Guest Role
- Kim Tae Moon[Doctor] (Ep.3)Guest Role
- Sim Hyun SeoJung Eun Ho (Ep.3)Guest Role
- Geum Ho SukKang In Ho [Prison guard] (Ep.4-5)Guest Role
- Ji Sung Geun[Thoung Nguyen's brother-in-law] (Ep.4)Guest Role
- Seo Woo JinShin Ha Roo [Child] (Ep.4-5)Guest Role
- Kim Joon Hyung[Detective] (Ep.3)Guest Role
- Lee Dong Soo[Mortuary staff] (Ep.3)Guest Role
- Lee Sang SookLee Jung Ja (Ep.5-6)Guest Role
- Chae Min HeeYang Eun Jung (Ep.5-6)Guest Role
- Shim Ji YooHan Ji Yul (Ep.5-6)Guest Role
- Yoon Hyo SikHan Sung Woo (Ep.5-6)Guest Role
- Kim Jin Ok[Believer] (Ep.5-6)Guest Role
- Yoo Joon A[Doctor] (Ep.5)Guest Role
- Yoo Yong[Lee Jung Ja's assistant] (Ep.5-6)Guest Role
- Lee Seung JoonHeo Beom Su (Ep. 7-8)Guest Role
- Jeon Ik RyungKim Jae Sook [Heo Beom Su's wife] (Ep. 7-8)Guest Role
- Han Ji WanHan Yeon Hee (Ep. 8-9)Guest Role
- Choi Da EumHan Sung Mi [Sting operation student] (Ep. 7)Guest Role
- Im Do HwaCherry [Virtual human] (Ep.7-8)Guest Role
- Oh Ki Hwan[Detective] (Ep.9)Guest Role
- Lee Won JungKim Joon Young (Ep.9-10)Guest Role
- Oh Yoon HongChoi Jung Yoon (Ep.9-10)Guest Role
- Oh Ga Bin[Witness] (Ep.9-10)Guest Role
- Park Jun HyukKim Joon Young [Teen] (Ep.9-10)Guest Role
- Kim Seung HanKim Ho Young [Child] (Ep.10)Guest Role
- Park Joon Sang[KCSI investigator] (Ep.11)Guest Role
- Lee Seung Hyung[Lawyer] (Ep. 11-12)Guest Role
- Park Jong Bo[Detective] (Ep.12,15)Guest Role
- Yoo Sung MinKim Hyun Joon (Ep.12-13)Guest Role
- Ha Shi EunNa Ji Ye (Ep.13)Guest Role
- Kwak Na Yeon[Exercising woman] (Ep.14)Guest Role
- Lee Won JooIm Young Hoon (Ep. 11)Guest Role
- Ji Han Ah[Ji Yul's aunt] (Ep. 5)Guest Role
- Jung Min Jung Guest Role
- Lee Ye Ji[Cho Na Young's neighbor] (ep.11)Guest Role
- Bae Jae Hyun[Hyun Joon's friend] (Ep. 13-14)Guest Role
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