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The search team has found Woo Hyun's son's body. Everyone is shocked by how much the boy's corpse was wrecked by the hunter. As someone with experience in losing a child, Dong Guk gives a piece of advice to Woo Hyun. CEO Hong turns out to be an accomplice to Woo Hyun's case. The difference between psychopaths and regular people are hard to distinguish, just like a 1mm difference.
Im Hwa-young
Yoon Seo-young
Sung Dong-il
Ko Dong-kook
Lee Seo-jin
Kang Woo-hyun
Seo Young-hee
Shin Yeon-soo
Kim Kwang-kyu
Jang Man-ho
Jo Dal-hwan
Bae Nam-Soo
Byun Hee-bong
Kim Shin-woo
Jang Seong-beom
Park Sung-Bum
Jang Won-hyung
Ho-gae
Yoon Kyung-ho
Mr. Yoon [Coffee owner]
Lee Ju-bin
Kim Shi Hyun [Woo Hyun's secretary]
Lee Si-hoon
Young Master
Dong Hyun-bae
Reporter Seo
Oh Han-kyul
Gang Shi Woo [Woo Hyun's son]
Choi Hong-il
Profiler Suk [Seo Yeong's superior]
Oh Ryoong
Hong Won Tae [Representative]
Lee Na-ra
Park Sun Mi [Min Joo's mother]
Choi Myeong-bin
Go Min Joo [Dong Gook's daughter]
Kwak Min-ho
Detective Gwang Su Dae
Choi Jae-sup
Reporter Go
Oh Chang-kyung
Yang Duk Chul [Detective]
Baek Ji-won
Mrs. Jo
Kwon Hyeok-beom
[Mrs. Jo's subordinate]