Cho Seung-wooHwang Si-mok Park Seong-geunKang Won-chul You Chea-myungLee Chang-jun Lee Kyoo-hyungYoon Se-won Shin Hye-sunYoung Eun-soo Lee Tae-hyeongKim Ho-seob Lee Kyung-youngLee Yun-beom Lee Hae-yeongShin Jae-yong Choi Byung-moKim Woo-gyun Jung Sung-ilManaging Director Park Jang Seong-beomPark Kyung-wan Jeon Soo-yeonAssisting Officer Jo Hye-sun Chang RyulYoo Jeong O [Detective] Uhm Hyo-seopPark Moo-sung Jung Seung-kilBaek Jung-gi Ye Su-jeongPark Moo-sung's mother Yoon Kyung-hoKang Jin-seob Ryu Sung-rokJeon Gi-hyeok Moon Jong-wonJeon Seung-pyo Oh Kyung-jooKo Chang-yong Park Mi-hyeonPark Gwang-su's wife Park Seong-ilLee Dae-seong Ha Sung-kwangKim Myeong-han Nam Kee-aeYoung Eun-soo's mother Park Soon-cheonHwang Si-mok's mother Sunwoo Jae-dukAhn Seung-ho Lee Do-hyun[Seung Jun's father] You Seong-jooKim Hu-jeong's father Ha-minKim Ga-young Teacher (Eps 5) Jinnie ChoiProductor ejecutivo Yu Je-wonAsistente de dirección Kang SookContinuity / Storyboard Jung Se-rinCompositor de música original Kim Jun-seokCompositor de música original 
