Class of Lies

Director

• 
  Sung Yong Il
• 
  Park Ji Hyun

Screenwriter

• 
  Jang Hong Chul

Main Role

• 
  Yoon Kyun Sang

  Ki Mu Hyeok / Ki gang Jae

  Main Role
• 
  Keum Sae Rok

  Ha So Hyeon

  Main Role
• 
  Lee Jun Young

  Yoo Beom Jin

  Main Role
• 
  Choi Yu Hwa

  Cha Hyeon Jeong

  Main Role
• 
  Choi Kyu Jin

  Lee Gi Hun

  Main Role
• 
  Han So Eun

  Han Tae Ra

  Main Role
• 
  Joo Se Bin

  Na Ye Ri

  Main Role

Support Role

• 
  Kwon So Hyun

  Seo Yun A

  Support Role
• 
  Shin Seong Ha

  An Byeong Ho / "Bundle" / "Porter"

  Support Role
• 
  Jang Dong Ju

  Kim Han Su

  Support Role
• 
  Jung Da Eun

  Jung Su A / Yoo Sun

  Support Role
• 
  Kwon Hyuk

  Yang Sang Bae [Deputy chief prosecutor]

  Support Role
• 
  Wie Ji Yeon

  Choi Min Ji

  Support Role
• 
  Lee Bit Na

  Lee Ji Eun

  Support Role
• 
  Kim Min Sang

  Yoo Yang Gi [Beom Jin's father]

  Support Role
• 
  Yoo Sung Joo

  Lee Do Jin [Gi Hun's father / CEO of Songha Law Firm]

  Support Role
• 
  Seo Ji Young

  Woo Eun Hye [Tae Ra's mother]

  Support Role
• 
  Jeon Seok Ho

  Lee Tae Seok [General manager]

  Support Role
• 
  Woo Hyun Joo

  Jeon Yeong Hye [Dean of Students]

  Support Role
• 
  Kim Ye Won

  Sin Hye Su [Korean Language teacher]

  Support Role
• 
  Seo Yoon Ah

  Cho Mi Ju

  Support Role
• 
  Yoon Ji Wook

  Kang U Jin [Music teacher]

  Support Role
• 
  Lee Jung Min

  Kim So Hui [Mu Hyeok's secretary]

  Support Role
• 
  Ji Chan

  Song Jae U [Lawyer]

  Support Role
• 
  Shin Jae Hwi

  Son Jun Jae

  Support Role
• 
  Lee Soon Won

  Park Won Seok [Hacker / Mu Hyeok friend]

  Support Role
• 
  Jeong Soo Hyun

  Lee Hae Jun

  Support Role
• 
  Choo Soo Bin

  Park Eun Gyeong

  Support Role
• 
  Lee Jung Joon

  Kim Hyeong Gyu

  Support Role
• 
  Park Geon Rak

  O Gi Hwan

  Support Role
• 
  Chae Hee Su

  [Veritas Club member]

  Support Role
• 
  Han Seung Hyun

  [Class member]

  Support Role

Guest Role

• 
  Lee Joon Hyuk

  [Head Corporation of Yongdory's Production] (Ep. 1)

  Guest Role
• 
  Tae Won Seok

  [Client / Yongdory's owner] (Ep. 1)

  Guest Role
• 
  Lee Chae Kyung

  [Judge] (Ep. 1-2, 16)

  Guest Role
• 
  Kim Tae Gyum

  [Prosecutor] (Ep. 2)

  Guest Role
• 
  Noh Sung Eun

  [Student] (Ep. 2)

  Guest Role
• 
  Shin Seung Ryul

  [Protestor] (Ep. 6)

  Guest Role
• 
  Kim Mi Hye

  [Interviewer] (Ep. 11)

  Guest Role
• 
  Choi Yu Ri

  Yoo Sun [Young] (Ep. 11-12)

  Guest Role
• 
  Jang Gwang

  Congressman Park (Ep. 15)

  Guest Role
• 
  Kim Ah Ram

  [Post office clerk] (Ep. 15)

  Guest Role
• 
  Cha Jung Won

  Jang Jeong Tae

  Guest Role
• 
  Lee Hye Jo

  [Tae Seok's agency employee]

  Guest Role
• 
  Choi Soo Hyun

  [Administration employee]

  Guest Role
• 
  Shin Hee Chul

  [Reporter]

  Guest Role
• 
  Hong Ye Ji

  [Reporter]

  Guest Role
• 
  Koo Ja Keon

  [Fighter]

  Guest Role
• 
  Ahn Sung Gun

  [Police officer]

  Guest Role
• 
  Hong Eun Jeong

  [Secretary]

  Guest Role
• 
  Song Han Hee

  [Student]

  Guest Role
• 
  Jo Jae Kyung

  [Student]

  Guest Role
• 
  Hong Seong Gwan

  [Investigator 1]

  Guest Role
• 
  Park Se Hoon

  [Prison officer]

  Guest Role
• 
  Lee Su Min

  [Spectator]

  Guest Role
• 
  In Jae Min

  [3rd year student]

  Guest Role
• 
  Han Yeo Wool Guest Role

Extras Casting

• 
  Noreen Joyce Guerra

  [Student]

  Extras Casting

Unknown

• 
  Choi Da Hye Unknown
• 
  Oh Young Mi Unknown
• 
  Kim Wang Yong Unknown
• 
  Bae Ha Neul Unknown
• 
  Yoon Jae Hyun Unknown