Episode 1 S01 E01

Jang Hyuk (as Lee Gun) Jang Na-ra (as Kim Mi Young / Ellie Kim) Choi Jin-hyuk (as Daniel Pitt) Wang Ji-won (as Kang Se Ra) Park Won-sook (as Chairwoman Wang) Choi Dae-chul (as Chief Tak Gu Dae) Choi Woo-shik (as Lee Yong) Na Young-hee (as Yong's mother) Jang Gwang (as "Dr. Octopus" Mun Min Seok) Park Hee-von (as Jun Ji Yeon) Song Ok-suk (as Mi Young's mother) Oh Sol-mi (as Kim Mi Suk) Lee Mi-do (as Kim Mi Ja) Jung Eun-pyo (as President Park) Lim Hyung-jun (as Mr. Choi) Seol Woo-hyung (as Dae Cheol) Jung Han-hun (as Lee Seong Mok) Park Jin-woo (as Lawyer Hong) Yang Geum-seok (as Se Ra's mother) Kim Yeong-hoon (as Min Byeong Cheol)

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