Composer
Director
Screenwriter
Main Role
- Yim Si WanHwang Dong JooMain Role
- Son Hyun JooIn Tae JoonMain Role
- Go Ah SungSeo Hye YoungMain Role
- Park Yong WooOh YoungMain Role
Support Role
- Jeon Ik RyungAhn Kyung Hee [NTS Joongang regional office]Support Role
- Moon Won JuKo Dong Won [NTS Joongang regional office]Support Role
- Moon Soo InKim Han Bin [NTS Joongang regional office]Support Role
- Jeon Bae SooJang Jung Il [NTS Joongang regional office]Support Role
- Yeon Je WookPark Sung Ho [NTS Joongang regional office]Support Role
- Lee Kyu HoeLee Ki Dong [NTS Joongang regional office]Support Role
- Yoon Se WoongAhn Sung Sik [NTS Joongang Regional Office]Support Role
- Choi Jun YoungIn Do Hoon [National Tax Service HQ]Support Role
- Park Ji IlBaek Seung Ryong [NTS HQ commissioner]Support Role
- Chu Sang MiMin So Jung [NTS HQ Vice Commissioner]Support Role
- Choi Bum HoCha Byung Hoon [NTS HQ]Support Role
- Lee ChangLim Chang Suk [NTS HQ]Support Role
- Kim Gook HeeNo Sun Joo [NTS Namju Regional Office]Support Role
- Lee Jung SicKim Young Tae [Prosecutors' office]Support Role
- Lee Chang HoonRyu Yong Shin [PQ Group financial director]Support Role
- Hwang Byung KookKim Suk Min [Reporter]Support Role
- Mi So YunYoon Seong Mi [Reporter]Support Role
Guest Role
- Park Ho SanHwang Chul Min [Dong Joo's father] (Ep. 1)Guest Role
- Kim Il Woo[Gang Seong Tax Accounting CEO] (Ep. 1)Guest Role
- Joo Yeon WooByun Bong Sook (Ep. 1)Guest Role
- Han Sang Chul[Angry wholesaler] (Ep. 1)Guest Role
- Seo Seung Won[Tax accountant] (Ep. 1)Guest Role
- Kim Ki Yeon[Gangnam madam] (Ep. 1)Guest Role
- Jang Sung Yoon[Pregnant woman] (Ep. 1-2)Guest Role
- Park Kyung Hoon[Pregnant woman's husband] (Ep. 1-2)Guest Role
- Woo HyunYang Young Soon [Chairman] (Ep. 1-2)Guest Role
- Jung Min Gyul[Gang Seong Tax Accounting manager] (Ep. 1, 7)Guest Role
- Noreen Joyce Guerra[NTS employee] (Ep. 1, 7)Guest Role
- Park Min SuHwang Dong Joo [Young] (Ep. 1, 8)Guest Role
- Cha Geon WooLim [Oz F&B tax accountant] (Ep. 2)Guest Role
- Kim Joon BumGeum Dong Shik [Oz F&B] (Ep. 2-3)Guest Role
- Park Wan KyuLee Young Suk [Oz F&B] (Ep. 2-3)Guest Role
- Im Seon WooShin Da Hye [Oz F&B] (Ep. 2-3)Guest Role
- Yoo Jong YeonHan Kyung Pyo [Oz F&B] (Ep. 2-3)Guest Role
- Lee Han IkLee Jung Ho [Lee Young Suk's Son] (Ep. 2-3)Guest Role
- Kim Byung GiSeo Byung Ki [Jaesong Construction Chairman] (Ep. 2, 7)Guest Role
- Jo Seung YunSeo Young Jae [Jaesong Construction CEO] (Ep. 2, 7)Guest Role
- Na Seok MinKwon Young Ho [NTS Joongang regional office] (Ep. 2-7)Guest Role
- Jo Seung Yeon[Sung Sik's wife] (Ep. 3)Guest Role
- Lee Jin Sung[NTS Joongang regional office staff] (Ep. 3)Guest Role
- Oh Seung Chan[NTS Joongang regional office staff] (Ep. 3, 7-8)Guest Role
- Kim Tae Baek[Bat man] (Ep. 4)Guest Role
- Min Choong SukMin Chang Sik [National Tax Service HQ] (Ep. 4-5)Guest Role
- Choi Jung HwaChun Joo Young [National Tax Service HQ] (Ep. 4-6)Guest Role
- Choi Ji YeonSeo Eun Hee [Hye Young's Mother] (Ep. 4-6)Guest Role
- Hong A Ron[NTS HQ Inspector] (Ep. 4-7)Guest Role
- Park Jin Young[Management division staff] (Ep. 4, 8)Guest Role
- Kim Joo Ah[Choong Ho's mother] (Ep. 4-5, 7-8)Guest Role
- Song Deok HoLee Choong Ho (Ep. 4-8)Guest Role
- Kim Soo Hyung[Hye Young's sister] (Ep. 5)Guest Role
- Im Yong Soon[Hye Young's father-in-law] (Ep. 5)Guest Role
- Jo Yoo Jung[Hye Young's mother-in-law] (Ep. 5)Guest Role
- Lee Yu Jin[Masseuse] (Ep. 5)Guest Role
- Song Yeon SooKim Woo Gyun (Ep. 5)Guest Role
- Lee Dong Geun[Police officer] (Ep. 5)Guest Role
- Lee Ye BitSeo Hye Young [Young] (Ep. 5-6)Guest Role
- Yoo Dong HunDong Hoon [Gold Cash loanshark] (Ep. 5, 7)Guest Role
- Lee Suk[Gold Cash loanshark] (Ep. 5-7)Guest Role
- Kim Do HyunJo Jin Ki [NTS Joongang regional office] (Ep. 5-7)Guest Role
- Jang Joon HyunJang Joon Hyun [NTS Joongang regional office] (Ep. 5, 7-8)Guest Role
- Shin Gi HwanYoon Kyung Jin (Ep. 5, 7-8)Guest Role
- Baek Sung ChulRyu Do Hyung [PQ Group] (Ep. 5, 8)Guest Role
- Kim Young SungJoo [Gold Cash director] (5-8)Guest Role
- Park Sang HwiSung Soo Hyun [NTS Joongang regional office Team Leader] (Ep. 6)Guest Role
- Choi Joon HyukJin Sung Kwon (Ep. 6)Guest Role
- Song Hoon[Auditor section chief] (Ep. 6)Guest Role
- Oh Il Young[Ex police chief] (Ep. 6)Guest Role
- Kim Jin[Tae Joon's secretary] (Ep. 6)Guest Role
- Kim Pyung Jo[Time Wash employee] (Ep. 6-7)Guest Role
- Seo Jeong Shik[Grand Cash CEO] (Ep. 7)Guest Role
- Im Yu Ran[CEO Seo Young Jae's wife] (Ep. 7)Guest Role
- Ahn Chan WoongTeam Leader Lee [NTService HQ] (Ep. 7)Guest Role
- Shin Jae Hwan[Loanshark CEO] (Ep. 7)Guest Role
- Park Jung Min[Bureau 4 section chief] (Ep. 8)Guest Role
- Lee Gun MyungHa Woong [Prosecutor's office] (Ep. 8)Guest Role
- Yoon Kwan Woo[Restaurant staff] (Ep. 8)Guest Role
- Jo Joon HyungNam Si Hoon [Assemblyman] (Ep. 8)Guest Role
- Jun Jung Il[Debater]Guest Role
- Jung Sae ByulJo Sun MinGuest Role
- Hong Seung An[NTS Team 2 Investigator 1]Guest Role
- Park Kyung Joo Guest Role
Unknown
- Lee Ru Da Unknown
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