Episode 6 S01 E06

Park Jung-chul (as Choi Tae Ha) Kim Tae-woo (as Kang Dae Woong) Kim Ji-soo (as Yoon Seo Yun) Kim Yeong-ae Song Min-hyung Jeong Seong-mo (as Na Hyung Goo) Baek Il-seob (as Dae Woong's father) Goh Doo-shim (as Chief Jun Jae Sook) Cho Jae-hyun Choi Kang-hee (as Jun Mi Sun) Jeong Dong-hwan Kwon Sang-woo (as Yang Dol Man) Lee Yoo-jin (as Goo Hong Eun) Park Young-ji (as Director Kim) Kim Se-jun (as Ha Sa Sa) Kim Byeong-gi (as President Yoon)