The Killer

While his girlfriend is away on a trip, retired assassin Bang Ui-kang is tasked with looking after her friend's 17-year-old daughter. After a street attack, Bang Ui-kang becomes embroiled in a murder investigation and dangerous trafficking gang.

• 
  Choi Jae-hoon

• 
  Jang Hyuk
  Bang Ui-kang
• 
  Lee Seo-young
  Kim Yoon-ji
• 
  Bang Eun-jeong
  Sung-yeon
• 
  Bruce Khan
  Yuri
• 
  Lee Seung-joon
  Detective Lee
• 
  Yoo Seo-jin
  Divorced Woman
• 
  Shin Seung-hwan
  Park Hyung-joo
• 
  Hong Seo-jun
  Kim Jung-hoon
• 
  Lee Chae-young
  Hyun-soo
• 
  Choi Ki-seob
  "Birthmark"
• 
  Cha Tae-hyun
  Cleaning Head
• 
  Son Hyun-joo
  Shooting Range Owner
• 
  Park Hyung-jun
  Hallway Man 1
• 
  Park Young-woon
  Hallway Man 2
• 
  Kim Hae-woong
  Hallway Man 3
• 
  Jeong Ho-gyun
  Corridor Man 5