A Killer Paradox

Kim Min-ju (Lee Young), Oh Min-ae (Lee Tang's Mother), Heo Seon-haeng (Lee Tang's Father), Jung Hoe-ryn (Eun-seon), Jo Hyun-wu (Yeo Boo-il), Moon Young-dong (Lee Gwang-hoon), Hyun Bong-sik (Park Choong-jin), Park Ji-han (Jung Gang-hyo), Choi Sun-woo (Gyeong-hwan), Jung Yi-seo (Sun Yeo-ok), Choi Mi-geum (Club Senior), Baek Yu-sung (Lee Jin-seong)

Oh Min-ae (Lee Tang's Mother), Jung Hoe-ryn (Eun-seon), Hyun Bong-sik (Park Choong-jin), Park Ji-han (Jung Gang-hyo), Choi Sun-woo (Gyeong-hwan), Jung Yi-seo (Sun Yeo-ok), Baek Yu-sung (Lee Jin-seong), Seo Jae-kwon (Kang Jae-joon), Yang Mal-bok (Shin Jung-hee), Park Kyung-geun (Chief of Crime Department), Oh Woo-ri (Mi-young)

Kim Min-ju (Lee Young), Oh Min-ae (Lee Tang's Mother), Heo Seon-haeng (Lee Tang's Father), Jung Hoe-ryn (Eun-seon), Hyun Bong-sik (Park Choong-jin), Park Ji-han (Jung Gang-hyo), Jung Yi-seo (Sun Yeo-ok), Baek Yu-sung (Lee Jin-seong), Seo Jae-kwon (Kang Jae-joon), Park Kyung-geun (Chief of Crime Department), Jang Sun (Jae-soon), Lee So-won (Kang Yeon-seo)

Kim Min-ju (Lee Young), Hyun Bong-sik (Park Choong-jin), Park Ji-han (Jung Gang-hyo), Park Kyung-geun (Chief of Crime Department), Nam Jin-bok (Ji Gyeong-bae), Oh Hye-won (Lee Yoo-jung), Lee Sang-won (Detective Kim), Ko Do-ha (Delivery Man), Kim Yo-han (Roh Bin)

Kim Min-ju (Lee Young), Oh Min-ae (Lee Tang's Mother), Heo Seon-haeng (Lee Tang's Father), Hyun Bong-sik (Park Choong-jin), Nam Jin-bok (Ji Gyeong-bae), Lim Se-joo (Choi Gyeong-ah), Song Hyeong-su (Noh Eui-cheol), Roh Jae-won (Ha Sang-min), Han Yoon-ji (Hyeon-ji), Lee Joo-young (Choi Gyeong-ah's Mother), Gun Woo (Choi Gyeong-ah's Ex-Boyfriend), Kim Yo-han (Roh Bin)

Yang Mal-bok (Shin Jung-hee), Jang Jun-whee (Team Leader), Han Ji-an (Hyeong Ji-soo), Kim Yo-han (Roh Bin), Lee Ji-hoon (Moon Myeong-jun)

Kim Min-ju (Lee Young), Oh Min-ae (Lee Tang's Mother), Heo Seon-haeng (Lee Tang's Father), Choi Sun-woo (Gyeong-hwan), Jung Yi-seo (Sun Yeo-ok), Yang Mal-bok (Shin Jung-hee), Oh Woo-ri (Mi-young), Jang Ji-an (Jang Nan-gam (Young)), Kang Jee-seok (Jang Nan-gam (Teen)), Lee Ju-won (Jang Gap-soo), Seung Eui-yeol (Hyeong Jung-guk), Jang Ui-don (Congressman)

Oh Min-ae (Lee Tang's Mother), Heo Seon-haeng (Lee Tang's Father), Hyun Bong-sik (Park Choong-jin), Yang Mal-bok (Shin Jung-hee), Oh Hye-won (Lee Yoo-jung), Lee Sang-won (Detective Kim), Jang Ji-an (Jang Nan-gam (Young)), Kang Jee-seok (Jang Nan-gam (Teen)), Lee Ju-won (Jang Gap-soo), Lee Ji-hae (Detective Park's Wife), Kim Yo-han (Roh Bin), Lee Ji-hoon (Moon Myeong-jun)