Choi Seunghyun-The cheif of police

Kwon Jiyong-the undercover

Kim Himchan-The profiler

Jung Daehyun-The murderer

Bang Yongguk-The protector

Jung Ilhoon-The brother,and Loyal assistant.

Yoo Youngjae- The innocent

Choi Junhong-The adopted

Yoo Jaesuk-The crazy uncle

Moon Jongup-The best friend

"Acceptance of one's life has nothing to do with resignation; it does not mean running away from the struggle. On the contrary, it means accepting it as it comes, with all the handicaps of heredity, of suffering, of psychological complexes and injustices."
Paul Tournier