Signal(2016)

Park Hae-young

17 episodes

Cha Soo-hyun

17 episodes

Lee Jae-han

17 episodes

Kim Bum-joo

16 episodes

Ahn Chi-soo

16 episodes

Kim Gye-chul

16 episodes

Oh Yoon-seo

16 episodes

Jung Heon-gi

16 episodes

Hwang Ui-kyung

16 episodes

Park Sun-woo

16 episodes

Cha Soo-min

16 episodes

Jang Young-cheol

6 episodes

Kang Hye-seung

6 episodes

Kang Hye-seung (young)

6 episodes

Jang Tae-jin

6 episodes

Lee Dong-jin

6 episodes

Shin Yeo-jin

3 episodes

Jung Kyung-soon

3 episodes

Lee Chan-goo

3 episodes

Lee Jin-hyung

3 episodes

Kim Won-kyeong

3 episodes

Oh Gyung-tae

3 episodes

Oh Eun-ji

3 episodes

Shin Dong-hoon

3 episodes

Informant

3 episodes

Han Se-gyu

3 episodes

Kim Jin-woo

3 episodes

Yoo Seung-yeon

3 episodes

Yoon Sang-mi

3 episodes

Hae-yeong's father

3 episodes

Lee Mi-sun's husband

3 episodes

Detective

3 episodes

Hwang Min-joo

3 episodes

Kim Won-kyeong's aunt

3 episodes

Yoon Soo-ah

2 episodes

Kang Se-young

2 episodes

Seo Hyung-joon

2 episodes

Police sergeant

2 episodes

Detective Park

2 episodes

Prison guard

2 episodes

Shin Da-hye (Eps 7, 8)

2 episodes

Park Myung-hoon

2 episodes

Farmer's wife

2 episodes

Bully

2 episodes

Se-gyoo's chauffeur

2 episodes

Detective

2 episodes

Shin Dong-hoon's wife

2 episodes

Kim Yoon-jung

2 episodes

Kim Yoon-jung's mother

2 episodes

Cha Soo-hyun's mother

2 episodes

Sin Jeong-hye

2 episodes

Min Sung

2 episodes

1 episode

Girl 3

1 episode

Celebrity news journalist

1 episode

Detective

1 episode

Attorney

1 episode

Cafe waitress

1 episode

Kim Ji-hee

1 episode

Detective Jung

1 episode

Workshop owner

1 episode

Jin-woo's mother

1 episode

Convenience store owner

1 episode

Student's mother

1 episode

Han Do-yeon

1 episode

Market stall owner

1 episode

Woman going to work

1 episode

Detective

1 episode

Sehoon Hospital nurse

1 episode

Detective

1 episode

Oh Seung-joon

1 episode

Street cleaner

1 episode

News programme guest

1 episode