• 
  Kyoo-man Lee

  regizor

• 
  Hyeon-jin Lee

  scenarist

• 
  Dong-il Song

  Detective Park
• 
  Seung-ryong Ryu

  Hwang Woo-hyeok
• 
  Yong-woo Park

  Kang Ji-seung
• 
  Byeong-eun Park

  Kim Joo-hwan
• 
  Deok-jae Jo

  Dong-pil's father
• 
  Gu-taek Kim

  Wol-il's father

• 
  Ji-ru Sung

  Jong's father
• 
  Jin-Mo Joo

  Department head Ahn
• 
  Mi-hyeon Park

  Won-il's mother
• 
  Sang-baek Nam

  Cheol-woo's father
• 
  Sang-hee Lee

  Yong-ok's father
• 
  Ui-soo Lee

  Cheol-woo's mother
• 
  Kim Yeo-jin

  mama lui Jong

• 
  Young-hwa Seo

  Dong-pil's mother