The Policeman's Lineage

A by-the-book police officer is assigned to secretly investigate a team leader who believes that the rules shouldn't stop an investigation. As the officer investigates further, his own attitudes begin to mirror the team leader's.

• 
  Lee Tae-sung
• 
  Lee Kyu-man

• 
  Choi Woo-shik
  Choi Min-jae
• 
  Cho Jin-woong
  Park Kang-yoon
• 
  Lee Hyun-wook
  President Kim
• 
  Park Hee-soon
  Chief of inspection
• 
  Kwon Yul
  Na Young-bin
• 
  Park Myung-hoon
  Cha Dong-chul
• 
  Jeong Seong-mo
  President Kim
• 
  Lee Eol
  Seo Joong-ho
• 
  Hong Gi-jun
  President Yong
• 
  Bek Hyun-jin
  Kwon Gi-ahn
• 
  Park Jung-bum
  Min-jae's father
• 
  Jang Seo-kyung
  Min-jae's sister
• 
  Won Hyun-jun
  Jeon Yong-bae
• 
  Son In-yong
  Detective Moon
• 
  Yeon Je-wook
  Detective Ahn
• 
  Cha Yeob
  Detective Ki
• 
  Lee Do-goon
  Detective Heo
• 
  Yoon Jin-young
  Director Jang
• 
  Park Jae-cheol
  Paramedic
• 
  Lee Taek-geun
  Past police 1