An Ethics Lesson

A bad guy, a cruel guy, a lame guy, a cowardly guy and the meanest woman gets involved in a beautiful university student's murder case.

• 
  Park Myung-rang

• 
  Lee Je-hoon
  Jung-hoon
• 
  Cho Jin-woong
  Park Myung-rok
• 
  Kim Tae-hun
  Han Hyun-soo
• 
  Kwak Do-won
  Soo-taek
• 
  Moon So-ri
  Sun-hwa
• 
  Ko Sung-hee
  Jin-ah
• 
  Lee Na-ra
  Eun-yeong
• 
  Kyul Hwi
  Min-tae
• 
  Park Byung-eun
  Ji-hoon
• 
  Lee Seung-joon
  D.A. Investigator
• 
  Choi Gwang-il
  Attorney Choi
• 
  Lee Dong-ha
  Prosecutor Lim
• 
  Kim Ki-cheon
  Jae-man
• 
  Min Bok-gi
  GG CEO
• 
  Park Gil-su
  Boss of Electronics Store
• 
  Jin Yong-uk
  Detective Moon
• 
  Chae Dong-hyeon
  Police Officer
• 
  Kwak Jin-mu
  Police (uncredited)
• 
  Kim Jae-young
  Military Sibling