Director
Main Role
- Shin Ha KyunSin Cha IlMain Role
- Lee Jung HaKoo Han SuMain Role
- Jin GooHwang Dae UngMain Role
- Jo AramYun Seo JinMain Role
- Jung Moon SungHwang Se UngMain Role
Support Role
- Baek Hyun JinYang Jae Seung [Managing director]Support Role
- Oh Hee JoonMoon Sang Ho [Deputy manager]Support Role
- Hong InYeom Gyeong Seok [JU Construction audit team deputy manager]Support Role
- Lee Ji HyunOk A Jeong [JU Construction audit team manager]Support Role
- Lee Do YupHwang Geon Ung [JU Construction’s former president]Support Role
- Lee Chae KyungIm Yu Seon [Geon Ung's wife]Support Role
- Park Soo YoungKoo Seok Gu [Han Su’s father]Support Role
- Woo Mi HwaAn Hye Yeong [Han Su’s mother]Support Role
- Kim Bi BiLee Mi Jin [Seo Jin's mother]Support Role
Guest Role
- Choi Jae SubGyeong Ryeol [Seok Gu's former co-worker] (Ep. 1)Guest Role
- Jeong Hee TaeKang Il Gwon [Ewoon Construction Finance manager] (Ep. 1)Guest Role
- Jung In KiTeam leader Kwak [Former JU Audit Team head] (Ep. 1)Guest Role
- Cha Shin Tae[Employee] (Ep. 1)Guest Role
- Lee Jae Eun[Cafeteria staff] (Ep. 1)Guest Role
- Kim Jung Han[Injured worker] (Ep. 1)Guest Role
- Kim Moon Ho[Injured worker] (Ep. 1)Guest Role
- Yoon Sang HwaPark Ho Yeon [President of Myung Tower] (Ep. 1-2)Guest Role
- Jung Suk YongBae Yeong Sik [Foreman] (Ep. 1-2)Guest Role
- Kim Hong PaSeo Gil Pyo [JU Construction managing director] (Ep. 1-2, 11-12)Guest Role
- Lee Kyu Hoe[Sin Cha Il's father] (Ep. 1, 12)Guest Role
- Kim Jae CheolAn Byeong Jin [Tower crane operator] (Ep. 2)Guest Role
- Jin Yong WookChoi Hyeong Il [Tower crane operator] (Ep. 2)Guest Role
- Kim Ik Tae[Executive] (Ep. 2)Guest Role
- Lee Dong Wook[Mechanic] (Ep. 2)Guest Role
- Kim Na Yeon[Yeong Sik’s daughter] (Ep. 2)Guest Role
- Jung Dong HwanBang Gi Ho [JU Construction shareholder] (Ep. 2-3, 6, 8, 11-12)Guest Role
- Yoon In JoGeneral Manager Jo (Ep. 3)Guest Role
- Lee Hyun[Restaurant worker] (Ep. 3)Guest Role
- Jung Woo Young[Housing department staff] (Ep. 3)Guest Role
- Jung Sang Hoon[Hiking club president] (Ep. 3)Guest Role
- Hong Soo HyunYu Mi Gyeong [JU Construction housing division’s head] (Ep. 3-4)Guest Role
- Shin Kang KyunMr. Kim [Victim of JU Construction Housing Embezzlement Case] (Ep. 3-4)Guest Role
- Park Wan KyuO Chang Sik [Union represtantive] (Ep. 3-4)Guest Role
- Ko Ju NiKim Min Hui [Mr. Kim's granddaughter] (Ep. 3-4)Guest Role
- Lee Shin KiKang Myeong Cheol [Audit's Team Manager / Mi Kyung's husband] (Ep. 3-4)Guest Role
- Gu Bon Jin[Detective] (Ep. 3-4)Guest Role
- Kang Moon KyungAn Dong U [Vice minister of Land] (Ep. 3-4, 11-12)Guest Role
- Kim Shin Yul[Lawyer] (Ep. 4)Guest Role
- Park Ji Ho[Chauffeur] (Ep. 4)Guest Role
- Lim Jung Min[Dump truck driver] (Ep. 4)Guest Role
- Seo Wang Seok[Dump truck driver] (Ep. 4)Guest Role
- Uhm Tae Ok[The Myeong worker] (Ep. 4)Guest Role
- Kim Han Sang[Employee] (Ep. 4-5)Guest Role
- Go Seo HeeEun Jung [Victim of JU Suncontract Corruption] (Ep. 5)Guest Role
- Lee Yang Hee[Hospital director] (Ep. 5)Guest Role
- Jo Han ChulPyeon In Ho [Director of JU Subcontracts & Procurement Department] (Ep. 5-6)Guest Role
- Kim Soo JinMin Eun Suk [Subcontractor Cafeteira owner] (Ep. 5-6)Guest Role
- Woo Ji HyunIm Jeong Yun [Manager of JU Subcontracts & Procurement Dept.] (Ep. 5-6)Guest Role
- Ha Sung MinLee Dong Cheol [Restaurant owner] (Ep. 6)Guest Role
- Sung Jeong Seon[Cleaning lady] (Ep. 6)Guest Role
- Ji Sung Geun[Business owner] (Ep. 6)Guest Role
- Ahn Hyun Jung[Jeong Yun’s mom] (Ep. 6)Guest Role
- Min Hyo Kyung[Restaurant owner] (Ep. 6)Guest Role
- Jun Jung Il[Restaurant owner] (Ep. 6)Guest Role
- Choi Sol Hee[Architecture dept. staff] (Ep. 6)Guest Role
- Kim Shin BiO Yeon U [JU Construction Technology Development department staff] (Ep. 6-7)Guest Role
- Shin Jae HaLee Ji Hun [Head of JU Construction Technology Development Department] (Ep. 6-7)Guest Role
- Lee Joong OkPark Jae Hwa [Manager of JU Construction Technology Development Department] (Ep. 6-7)Guest Role
- Kim Hwa Joong[Developer] (Ep. 6-7)Guest Role
- Park Bin[Developer] (Ep. 6-7)Guest Role
- Yoo Yong[Developer] (Ep. 6-7)Guest Role
- Lee So Geum[Developer] (Ep. 6-7)Guest Role
- Jeon Jae Hong[Security guard] (Ep. 6-7)Guest Role
- Kim Sang Bo[Audit team manager] (Ep. 6, 12)Guest Role
- Park Jae Chul[Passport forger] (Ep. 7)Guest Role
- Kim Geun Bae[Reporter] (Ep. 7-8)Guest Role
- Hyun Bong SikKim Man Su [Baeon Construction's assistant manager] (Ep. 7, 10)Guest Role
- Jo Ah RaLee Cha Sun [HR Team Head] (Ep. 8)Guest Role
- Park Ye NiJung Hye Yeong [HR Assistant manager] (Ep. 8)Guest Role
- Lee Gyoung Ho[Employee] (Ep. 8)Guest Role
- Min Sung WookYun Dae Gyeong [Former JU HR Team head] (Ep. 9)Guest Role
- Kim Yoon Hong[Dae Ung’s dad] (Ep. 9)Guest Role
- Lee Il Joon[Han Su’s friend] (Ep. 9)Guest Role
- Park Sil Rim[Elevator employee] (Ep. 9)Guest Role
- Kim Ji HyunSeo Hui Jin [Team leader of external auditor ''Bal-eun''] (Ep. 9-10)Guest Role
- Hong Seo JoonCEO Jung [Loan shark / Hye Yeong's father] (Ep. 10)Guest Role
- Lee DabitnaGong Chae Won [HR Department staff] (Ep. 10)Guest Role
- Hwang Min HoMin Yeong Cheol [Auditor] (Ep. 10)Guest Role
- Jang So Yeon[Man Su’s wife] (Ep. 10)Guest Role
- Lee Do Hyung[Job interviewer] (Ep. 10)Guest Role
- Kim Do Hyeong[Job interviewer] (Ep. 10)Guest Role
- Kwak Min Seok[Karaoke room man] (Ep. 10)Guest Role
- Lee Jae Woo[JU Construction director] (Ep. 10-11)Guest Role
- Jeon Se YongDirector Kim [JU Construction director] (Ep. 10-11)Guest Role
- Lee Dong Kyu[Anchorman] (Ep. 11)Guest Role
- Shin Dong Ryuk[Reporter] (Ep. 11)Guest Role
- Min Sang Chul[Photographer] (Ep. 11)Guest Role
- Kim Mi RaChief Song [Head of JU Florida Branch] (Ep. 11)Guest Role
- Lee Woon SanLee Hyeok Jun [Inseol Architecture employee] (Ep. 11)Guest Role
- Kim Mi JiYoon Sang Eun [Inseol Architecture employee] (Ep. 11)Guest Role
- Kim Jung WooChoi Won Sik [Inseol Architecture employee] (Ep. 11)Guest Role
- Heo Jun SeokChae Jong U [JU Subcontracts & Procurement Director] (Ep. 11-12)Guest Role
- Lee Jae Woo[Detective] (Ep. 11-12)Guest Role
- Lee Jae HuiKim Min Seok [Mr. Kim's grandson] (Ep. 3-4)Guest Role
- Park Tae RinShin Cha Il [Young] (Ep. 1, 12)Guest Role
- Son Sang Hyeok[Security guard] (Ep. 7)Guest Role
- Gil Ju HuiYu Mi Gyeong [Young) (Ep. 3-4)Guest Role
- Han Seo ILee Yeon Ji [Junior manager of Finance] (Ep. 4)Guest Role
- Park Se Hoon[Detective] (Ep. 11-12)Guest Role
- Kim Da Han Guest Role
- Lim Young Joon[Doctor] (Ep. 12)Guest Role
- Jeon Soo Ji[Chae Jong U's wife] (Ep. 12)Guest Role
- Kim Jae Il[JU security guard] (Ep. 12)Guest Role
- Ki Hwan[JU security guard] (Ep. 12)Guest Role
- Lee Won Jin[Hospital security guard] (Ep. 12)Guest Role
- Moon Hak Jin[JU Construction employee] (Ep. 12)Guest Role
- Jung Jin YoungKim Si Hyun [Director of Public Sector Inspection] (Ep. 12)Guest Role
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