Spring Turns to Spring

Director

• 
  Kim Sang Ho
• 
  Park Seung Woo

Screenwriter

• 
  Lee Hye Seon

Main Role

• 
  Lee Yoo Ri

  Kim Bo Mi / Lee Bom

  Main Role
• 
  Uhm Ji Won

  Lee Bom / Kim Bo Mi

  Main Role
• 
  Choi Byung Mo

  Park Yoon Cheol

  Main Role
• 
  Lee Jong Hyuk

  Lee Hyung Seok

  Main Role

Support Role

• 
  Ahn Se Ha

  Heo Bom Sam [Bo Mi's childhood friend]

  Support Role
• 
  Kim Nam Hee

  Heo Bom Il [Scientist]

  Support Role
• 
  Lee Seo Yeon

  Park Shi Won [Lee Bom's daughter]

  Support Role
• 
  Son Eun Seo

  Choi Seo Jin [Lee Bom's aide]

  Support Role
• 
  Kum Chae Ahn

  Kim Yoo Ri [Bo Mi's sister]

  Support Role
• 
  Kim Kwang Gyu

  Bang Gwang Gyu [Agency CEO]

  Support Role
• 
  Kim Jung Seok

  General Manager Kim [Bo Mi's boss]

  Support Role
• 
  Jung Han Hun

  Yoon Young Hoo [News Media CEO]

  Support Role
• 
  Mi Ram

  Chun Soo Hyun [News anchor]

  Support Role
• 
  Heo Tae Hee

  Yun Jin U [CEO's nephew]

  Support Role
• 
  Kim Sung Hyun

  Je Im Soo [Rising idol]

  Support Role
• 
  Oh Young Shil

  Sister Angelina [Nursery teacher]

  Support Role
• 
  Kim Yoon Joo

  Yun Min Jung [MBS writer]

  Support Role
• 
  Heo Jin

  Kong Mal Sim [Yun Cheol's mother]

  Support Role
• 
  Go Eun Chong

  MBS Reporter Ma Jun Soo

  Support Role
• 
  Kang Moon Young

  Kim Hye Ra / Sarah Kang

  Support Role
• 
  Bae Yoo Ri

  Kim Ah Ri [MBS Reporter]

  Support Role
• 
  Myung Seok Geun

  Do Min Joon [MBS Assistant Director]

  Support Role
• 
  Ha Kyung Min

  Jo In Seong [MBS reporter]

  Support Role
• 
  Go Han Min

  [MBS Program Producer Jang]

  Support Role
• 
  Shin Sung Min

  [MBS Staff]

  Support Role
• 
  Oh Yun Gun

  [Broadcast station Accountant]

  Support Role

Guest Role

• 
  Min Jung Sup

  [Ice rink owner] (Ep.12)

  Guest Role
• 
  Go Jin Myung

  [Hiking a mountain trail] (Ep.13)

  Guest Role
• 
  Ok Joo Ri

  [Hiking a mountain trail] (Ep. 13)

  Guest Role
• 
  Jo Jae Ryong

  [Homeless man] (Ep.32)

  Guest Role
• 
  Sa Kang

  Sa Jang [Comic book store owner]

  Guest Role
• 
  Carson Allen

  Anastasia [Bom Il's ex-girlfriend]

  Guest Role
• 
  Jun Eun Mi

  [Nursing home director]

  Guest Role
• 
  Son Jin Hwan

  Choi Ju Guk [Misu Construction]

  Guest Role
• 
  Kwon Hyuk Soo

  Assemblyman Jang

  Guest Role
• 
  Mr. Pang

  Yoo Do Ri

  Guest Role
• 
  Yun Hae Bin

  Im Bo Ra

  Guest Role
• 
  Kim Min Ho

  Heo Bom Sam [Young]

  Guest Role
• 
  Jung Myung Joon

  [Assemblyman]

  Guest Role
• 
  Joel Roberts

  [CIA agent]

  Guest Role
• 
  Jeon Min Hyup

  [CIA agent]

  Guest Role
• 
  Choi Gyo Shik

  [Taxi driver]

  Guest Role
• 
  Jo Seung Yun

  [Audition Casting Director] (Ep28)

  Guest Role
• 
  Moon Hak Jin

  [Surgeon]

  Guest Role
• 
  Park Mi Ri

  [Woman of couple]

  Guest Role
• 
  Yong Jin

  [Reporter]

  Guest Role
• 
  Kang Pil Sun

  [Police officer]

  Guest Role
• 
  Shin Hee Gook Guest Role
• 
  Lee Soo Ah Guest Role
• 
  Bret Allan Lindquist

  [Agent]

  Guest Role
• 
  Bae Kyung Min

  [Customer @ clothing store]

  Guest Role
• 
  Moon Chang Jun

  [MBS Broadcasting staff]

  Guest Role
• 
  Kim Ji Hoon

  Heo Bom I [Young]

  Guest Role
• 
  Choi Seul Ki

  [High school student]

  Guest Role
• 
  Yang Joon Myung

  [CIA]

  Guest Role
• 
  Kim Young Mi

  [Nurse]

  Guest Role
• 
  Lee Ji Won

  [Announcer]

  Guest Role
• 
  Park Joon Soo

  [Pedestrian]

  Guest Role
• 
  Song Hoon

  [entertainment company CEO]

  Guest Role

Unknown

• 
  Nam Yun Seo Unknown
• 
  Ko Tae Jin Unknown
• 
  Shin Ye On Unknown

Extras Casting

• 
  Noreen Joyce Guerra

  [Student with phone on hand] (Ep. 22)

  Extras Casting