Full cast of Nobody Knows

Kim Seo-hyung

Cha Young-jin

16 episodes

Ryu Deok-hwan

Lee Sun-woo

16 episodes

Park Hoon

Baek Sang-ho

16 episodes

Ahn Ji-ho

Go Eun-ho

16 episodes

Cho Han-cheul

Yoon Hee-seob

16 episodes

Yoon Jae-yong

Ha Min Sung

16 episodes

Yoon Chan-young

Ju Dong-myung

16 episodes

Seo Young-joo

Kim Tae-hyung

16 episodes

Shin Jae-whi

Oh Du-seok

16 episodes

Min Jin-woong

Lee Jae-hong

16 episodes

Park Cheol-min

Han Geun-man

16 episodes

Moon Sung-keun

Hwang In-bum

16 episodes

Baek Soo-jang

Park Jin-su

16 episodes

Jang Young-nam

Jung So-yun

16 episodes

Park Min-jung

Bae Sun-a

16 episodes

Tae Won-seok

Ko Hee-dong

16 episodes

Jeon Seok-chan

Kim Byung-hee

16 episodes

Kwon Hae-hyo

Jang Gi-ho

16 episodes

Kang Seo-ha

Yun Ja Yeong [Seoul police department]

16 episodes

Jang Jae-ho

Choi Dae Hoon [Ha Min Sung's chauffeur]

5 episodes

Kim Sae-ron

Cha Young Jin [Young]

2 episodes

Min Sung-wook

Kevin Jung

2 episodes

Kang Shin-il

Seo Sang Won

2 episodes

Baek Jae-woo

Baek Sang Ho [Young]

2 episodes

Ha Mheen

Jae-min Mother (Eps 1)

1 episode