Hunter with a Scalpel

Director

• 
  Lee Jung Hoon

Main Role

• 
  Park Ju Hyun

  Seo Se Hyeon

  Main Role
• 
  Park Yong Woo

  Yun Jo Gyun

  Main Role
• 
  Kang Hoon

  Jung Jeong Hyeon

  Main Role

Support Role

• 
  Ryu Seung Soo

  Jeon Chang Jin [Detective]

  Support Role
• 
  Ryu Hae Jun

  O Min Ho [Forensic scientist]

  Support Role
• 
  Choi Kwang Je

  Jang Hyeok Geun [Detective]

  Support Role
• 
  Bin Chan Uk

  Park Seok U [Detective]

  Support Role
• 
  Kim Min Sang

  Choi Jong Su [Detective]

  Support Role
• 
  Kang Sung Jin

  Kim Jin Rae [Yongcheon police station chief]

  Support Role
• 
  Lee Doo Suk

  Hong Jin U [Detective]

  Support Role
• 
  Jin Ga Eun

  Cheon Su Yeon [NFS Seoul institute]

  Support Role
• 
  Park Jae Chul

  Kwon Hyeong Jo

  Support Role
• 
  Oh Yeon Ah

  Yang Jun Gyeong [NFS Seoul institute]

  Support Role
• 
  Moon Jung Dae

  Kim Myeong Gwan [NFS Seoul institute director]

  Support Role

Guest Role

• 
  Ko Deok Won

  Nam Seung Hyeop (Ep. 1)

  Guest Role
• 
  Kang Ji Yong

  Lee Hyeong Cheol (Ep. 1)

  Guest Role
• 
  Kim Seon Hwa

  Kim Sun Ja [Matna restaurant owner] (Ep. 1)

  Guest Role
• 
  Lee Dong Gyu

  [Anchorman] (Ep. 1)

  Guest Role
• 
  Son Tae Wook

  [Drug addict] (Ep. 1)

  Guest Role
• 
  Kim Hak Soo

  [Police officer] (Ep. 1)

  Guest Role
• 
  Yoon Tae Ha

  [Club drug user] (Ep. 1)

  Guest Role
• 
  Ryu Seong Hwan

  [Hyeong Cheol's brother] (Ep. 1)

  Guest Role
• 
  Lee Ja Ryoung

  [Shop owner] (Ep. 1, 4)

  Guest Role
• 
  Kim Yu Ri

  [Nurse] (Ep. 2, 10)

  Guest Role
• 
  Lee Jin Seung

  [Anchorman] (Ep. 2, 14)

  Guest Role
• 
  Shin Hee Gook

  Choi Jun Ho [NFS Seoul institute] (Ep. 3)

  Guest Role
• 
  Oh Ki Hwan

  Yun Gyeong Ho [NFS Seoul institute] (Ep. 3)

  Guest Role
• 
  Lee Ha Joo

  Jung Mi Yeong [Complaining customer] (Ep. 4)

  Guest Role
• 
  Heo Jin

  [Reporter] (Ep. 4)

  Guest Role
• 
  Kang Choon Sung

  [Police officer] (Ep. 4)

  Guest Role
• 
  Lee Ga Kyung

  Lee Jeong Mi (Ep. 5)

  Guest Role
• 
  Kim Young Sun

  Hyeon Jin Seok (Ep. 8)

  Guest Role
• 
  Jung Ki Sun

  [Security guard] (Ep. 8)

  Guest Role
• 
  Jung Ah Young

  [Student] (Ep. 8)

  Guest Role
• 
  Kim Nan Hee

  [Min Ho's mother] (Ep. 9)

  Guest Role
• 
  Park Gang To

  [Lab technician] (Ep. 9)

  Guest Role
• 
  Park Yong

  Dr. Yun (Ep. 11)

  Guest Role
• 
  Cha Yoo Joo

  [Nurse] (Ep. 12)

  Guest Role
• 
  Jeong Seo Yeon

  [Pharmacist] (Ep. 12)

  Guest Role
• 
  Jung Dong Geun

  [Detective] (Ep. 13)

  Guest Role
• 
  Koo Hey Ryoung

  [Shop manager] (Ep. 13)

  Guest Role
• 
  Lee Yeon Joo

  [Nurse] (Ep. 13)

  Guest Role
• 
  Myung Jae Hwan

  [Doctor] (Ep. 13)

  Guest Role
• 
  Yoon Jong Goo

  [Ship owner] (Ep. 13, 15)

  Guest Role
• 
  Sung Jeong Seon

  [Convenience store owner] (Ep. 14-15)

  Guest Role
• 
  Lee Soo Yeon

  [Nurse] (Ep. 15)

  Guest Role
• 
  Kim Dong Hoon

  Kim Bo Gyeong

  Guest Role
• 
  Kim Kyu Na

  Yun Se Eun [Se Hyeon's sister]

  Guest Role
• 
  Shin Yeon Woo

  Ko Eun Seo [Se Hyeon's sister]

  Guest Role
• 
  Lee Dal

  Kim Hyeong Su [Reporter]

  Guest Role
• 
  Shim Ji Yoo

  Seo Se Hyeon [Child]

  Guest Role
• 
  Kang Myung Joo

  Seo Won Hui [Se Hyeon's mother]

  Guest Role
• 
  Lee Hyeon Jin

  [Fruit store owner]

  Guest Role

Unknown

• 
  Seo Dong Gyu Unknown