Cast 31
PPark Hae-sooKim Je-hyeok
Jung Kyung-hoLee Jun-ho
Krystal JungJi-ho
Lee Kyoo-hyungLooney
Choi Mu-sungMin-cheol
Jeong Min-sungDr. Ko
Park Ho-sanKAIST
Kang Seung-yoonJean Valjean
Jung Woong-inLieutenant Paeng
Jung Hae-inCaptain Yoo
Kim Sung-cheolJailbird
Lee Do-hyunYoung Lee Jun‑ho
Im Hwa-youngKim Je-hee
Kang Ki-doongOfficer Song
Choi Seong-wonMole Boy
Sung Dong-ilChief Jo
Kim Kyung-namLee Joon-dol
Jung Moon-sungCaptain Yoo's Brother
Ju Seok-taeWood workshop manager Yum
Shin Won-hoCorporal Joo [Jung Woo's soldier]
Ahn Sang-wooKim Yong Chul [Prison Warden]
Lee Young-suk"Lifer" [Inmate - Woodwork shop]
Han Ji-wonKim Je-hee (Young)
Shin Dong-hoonReporter
Yeom Hye-ranHan Yang's mother
Kim Jung-kiMinister of Justice's aide
Choi Gwang-il[Death Row Inmate - Detention Center]
Tae Won-seokArmy Lieutenant [Jung Woo's colleague]
Choi Young-wooPrison guard Lee Jeong-jae
Kim Jung-palDirector Ji [Doctor Ko's former boss]
Kim Mo-beomPrivate Park Joon-young