Secret

A detective suspects that his wife murdered a gangster's brother. As he tries to misdirect the police and the bloodthirsty gangster while independently investigating his wife, terrible secrets slowly begin to surface.

• 
  Yoon Jae-goo

• 
  Cha Seung-won
  Det. Seong-ryeol Kim
• 
  Song Yun-ah
  Ji-yeon Yu
• 
  Ryu Seung-ryong
  Je-kal
• 
  Park Won-sang
  Det. Choi
• 
  Oh Jung-se
  Kyeong-ho
• 
  Kim In-kwon
  Seok-jun
• 
  Park Hyo-ju
  Hye-jin
• 
  Yang Eun-yong
  Eun-young
• 
  Ye Su-jeong
  Ji-yeon's mother
• 
  Lee El
  Young-sook
• 
  Choe Yoon-seul
  Nurse
• 
  Um Tae-goo
  Man on Phone
• 
  Im Gi-hong
  Detective
• 
  Yang Geun-seok
  Plainclothes Officer
• 
  Lee Cheol-min
  Cho Dong-cheol
• 
  Lee Jae-gu
  Goo Cheol-seung
• 
  Choi Seong-min
  Doctor