Sign (2011)

Director

• 
  Kim Hyung Shik
• 
  Kim Young Min

Martial Arts Director

• 
  Jung Doo Hong

Producer

• 
  Choi Moon Seok

Screenwriter

• 
  Kim Eun Hee

Screenwriter & Director

• 
  Jang Hang Joon

Main Role

• 
  Jung Gyu Woon

  Choi Yi Han

  Main Role
• 
  Uhm Ji Won

  Jung Woo Jin

  Main Role
• 
  Kim Ah Joong

  Go Da Kyung

  Main Role
• 
  Park Shin Yang

  Yoon Ji Hoon

  Main Role
• 
  Jun Kwang Ryul

  Lee Myung Han

  Main Role

Support Role

• 
  Kim Kyung Bum

  Park Tae Gyu

  Support Role
• 
  Moon Cheon Shik

  Ahn Sung Jin

  Support Role
• 
  Park Young Ji

  Kang Joon Hyuk

  Support Role
• 
  Jang Hyun Sung

  Jang Min Seok

  Support Role
• 
  Kim Eung Soo

  [Superintendent prosecutor]

  Support Role
• 
  Lee Jung Hun

  Joo In Hyuk

  Support Role
• 
  Im Ho Gul

  Jang Jae Young

  Support Role
• 
  Jung Seung Ho

  Go Kang Shik

  Support Role
• 
  Kim Han Joon

  Kang Yong Hwa

  Support Role
• 
  Ahn Moon Sook

  Hong Sook Joo

  Support Role
• 
  Hwang Sun Hee

  Kang Seo Yeon

  Support Role
• 
  Yoo Se Rye

  Mi Young

  Support Role
• 
  Kim Young Sun

  [Jung Eun's mom]

  Support Role
• 
  Song Jae Ho

  Jung Byung Do

  Support Role
• 
  Jung Eun Pyo

  Kim Wan Tae

  Support Role
• 
  Kwon Byung Gil

  Goo Sung Tae

  Support Role
• 
  Jung Gi Sung

  Prosecutor Ahn Chil Hyun

  Support Role
• 
  Jang Min Young

  Lee Soo Jung

  Support Role
• 
  Choi Min

  No Sang Min [Prosecutor]

  Support Role
• 
  Kang Shin Goo

  Detective Yang Joon Ho

  Support Role

Guest Role

• 
  Kim Sung Won

  school principal (ep 8)

  Guest Role
• 
  Im Seung Dae Guest Role
• 
  Yoon Joo Sang

  Jung Moon Soo

  Guest Role
• 
  Choi Jae Hwan

  An Su Hyeon (Ep. 4-7)

  Guest Role
• 
  Kang Samuel

  drunk guy #2

  Guest Role
• 
  Oh Hyun Chul

  Woo Jae Won

  Guest Role
• 
  Park Geon Il

  VOICE leader Seo Yoon Hyung

  Guest Role
• 
  Song Ji Hyuk

  [VOICE member]

  Guest Role
• 
  Kim Sung Je

  [VOICE member]

  Guest Role
• 
  Kim Jung Tae

  Jung Cha Yeong (Ep. 11-13)

  Guest Role
• 
  Kim Dan Yool

  [Village kid] (Ep. 13-14)

  Guest Role
• 
  Jung Da Bin

  Da Bin (Ep. 13-14)

  Guest Role
• 
  Baek Seung Hyun

  Lee Chul Won (Ep. 12-13)

  Guest Role
• 
  Han Bo Bae

  Aki-chan (Ep. 8)

  Guest Role
• 
  Lee Chang

  [Game company president]

  Guest Role
• 
  Sung In Ja Guest Role
• 
  Kim Sung Oh

  Lee Ho Jin

  Guest Role
• 
  Choi Young Shin

  drunk woman

  Guest Role
• 
  Jung Yoo Chan Guest Role
• 
  Yoo Chae Mok

  prison officer

  Guest Role
• 
  Jung Ji Yoon

  [Secretary for lead prosecutor]

  Guest Role
• 
  Yang Taek Jo

  Mr. Song

  Guest Role
• 
  Kim Kwang Soo

  [VOICE member]

  Guest Role
• 
  Jang Hang Joon

  [Side table guest]

  Guest Role
• 
  Lee Jae Woo Guest Role
• 
  Jo Wan Ki Guest Role
• 
  Kim Tae Young Guest Role
• 
  Sung Mo

  [VOICE member]

  Guest Role
• 
  Kim Ri Woo Guest Role
• 
  Lee Sae Yoon Guest Role
• 
  Jung Yoon Hak

  [Boy Band "VOICE" Member]

  Guest Role
• 
  Han Dong Hwan Guest Role
• 
  Yoon Don Sun Guest Role

Bit part

• 
  Oh Jung Won Bit part

Unknown

• 
  Jo In Woo Unknown
• 
  Joo Woo Unknown
• 
  Heo In Beom Unknown
• 
  Park Sun Joon Unknown