Queen of Mystery

Chief Producer

• 
  Bae Kyung Soo

Composer

• 
  Choi In Hee

Director

• 
  Kim Jin U
• 
  Yoo Young Eun

Screenwriter

• 
  Lee Sung Min

Main Role

• 
  Choi Kang Hee

  Yoo Seol Ok

  Main Role
• 
  Kwon Sang Woo

  Ha Wan Seung

  Main Role

Support Role

• 
  Lee Won Keun

  Hong Joon Oh [Police officer]

  Support Role
• 
  Jeon Soo Jin

  Kim Ho Soon [Seol Ok's sister-in-law]

  Support Role
• 
  Park Jun Gum

  Park Gyeong Seok [Madame / Seol Ok's mother-in-law]

  Support Role
• 
  Kim Hyun Sook

  Kyung Mi [Seol Ok's best friend]

  Support Role
• 
  Yang Ik June

  Jang Do Jang

  Support Role
• 
  Ahn Kil Kang

  Bae Kwang Tae [Detective]

  Support Role
• 
  Park Byung Eun

  Woo Sung Ha [Profiler]

  Support Role
• 
  Yoon Hee Seok

  Kim Ho Cheol [Seol Ok's husband]

  Support Role
• 
  Jung In Ki

  Jang Woo Sup

  Support Role
• 
  Shin Hyun Been

  Jung Ji Won

  Support Role
• 
  Ahn Se Ha

  [Police Officer]

  Support Role
• 
  Lee Shi Won

  Seo Hyun Soo

  Support Role
• 
  Jung Yeon Joo Support Role
• 
  Lee Yong Nyeo

  [Kyung Seok's friend]

  Support Role
• 
  Baek Hyeon Ju

  [Neighbour]

  Support Role
• 
  Jeon Jin Ki

  Park Sung Man [Chief of crime department]

  Support Role
• 
  Lee Yoo Joon

  Park Won Hee

  Support Role
• 
  Cha Min Ji

  Ko Joo Yeon

  Support Role
• 
  Cha Rae Hyoung Support Role
• 
  Kim Min Jae

  Detective Lee Dong Gi

  Support Role
• 
  Jung Kyung Ho

  [Yong Chul's friend]

  Support Role
• 
  Shim Wan Joon

  Detective Go

  Support Role
• 
  Park Myung Shin

  [Seol Ok's mother]

  Support Role
• 
  Kil Hae Yeon

  [Gyeong Seok's friend]

  Support Role

Guest Role

• 
  Han Ki Woong

  Cha Min Woo / No Doo Gil (Ep. 7-8)

  Guest Role
• 
  Song Soo Hyun

  Yoo Seol Ok [Young]

  Guest Role
• 
  Kim Hyeon Bin

  Cha Hee Chul

  Guest Role
• 
  Sung Ki Yoon

  Cha Yong Chul [Hee Chul's dad]

  Guest Role
• 
  Lee Ho Jae

  [Hee Chul's grandfather]

  Guest Role
• 
  Hong Jin Ki

  Kim Ho Cheol [Young]

  Guest Role
• 
  Hong Kyung

  [Bully]

  Guest Role
• 
  Lee Chae Kyung

  Lee Myung Hee [Hee Chul's mom] (Ep. 3-5)

  Guest Role
• 
  Park Min Su

  [Supermarket owner’s son]

  Guest Role
• 
  Jeong Min Sung

  [Yong Cheol's friend] (Ep. 4-5)

  Guest Role
• 
  Min Jung Sup Guest Role
• 
  Jung Eun Sung Guest Role
• 
  Choi Min Geum Guest Role
• 
  Ok Joo Ri Guest Role
• 
  Kwon Hyuk Soo Guest Role
• 
  Jung Dong Geun

  [Prosecutor]

  Guest Role
• 
  Im Jae Geun

  [Rescue crew member at Seol Ok's house]

  Guest Role
• 
  Koo Ji Hye

  Kim Ho Soon [Young]

  Guest Role
• 
  Park Sang Hwi

  [Public Relations, Police Dept]

  Guest Role
• 
  Kang Dong Yup Guest Role
• 
  Jin Hyun Kwang

  [Inspector]

  Guest Role
• 
  Kang Shin Goo Guest Role
• 
  Park Joo Yong Guest Role
• 
  Seo Wang Seok Guest Role
• 
  Gong Da Im

  [Police]

  Guest Role
• 
  Kwon Soo Hyun

  Ha Wan Seung [Young]

  Guest Role
• 
  Jung In Gyeom Guest Role
• 
  Seo Myung Chan Guest Role
• 
  Lee Min Jae Guest Role
• 
  Lee Hyun Seo

  [Doctor]

  Guest Role
• 
  Lee Dae Yeon

  Yoo II Sang [Seol Ok's father]

  Guest Role
• 
  Gong Ho Seok Guest Role
• 
  Lee Jung Hyun

  [Agile thief] (Ep. 1)

  Guest Role

Unknown

• 
  Lee Gyu Ho Unknown
• 
  Lim Dong Yoon Unknown
• 
  Yoon Jong Won Unknown
• 
  Choi Yoon Bin Unknown
• 
  Choo Kwi Jung Unknown
• 
  Park Tae Yun Unknown

Bit part

• 
  Joo Seok Tae

  Gangster

  Bit part