Cast (23)

Ji Sung

Cha Do-hyun / Shin Se-gi

Hwang Jung-eum

Oh Ri-jin

Park Seo-jun

Oh Ri-on

Kim Yoo-ri

Han Chae-yeon

Oh Min-suk

Cha Ki-joon

Kim Young-ae

Seo Tae-im

Shim Hye-jin

Shin Hwa-ran

Kim Yong-geon

Cha Geon-ho

Ahn Nae-sang

Cha Joon-pyo

Myung Se-bin

Min Seo-yeon

Ko Chang-seok

Dr. Seok Ho-pil

Choi Won-young

Chief Ahn Gook

Kim Hee-jung

Ji Soon-young

Park Jun-gyu

Oh Dae-o

Kim Na-woon

Yoon Ja-kyung

Kim Il-woo

Cha Young-pyo

Kim Hyun-joo

Baek Jin-sook

Baek Chul-Min

Alex Kang

Kim Hyeong-beom

Chief Choi

Cho Chang-geun

Kang In-kyu

Kang Bong-sung

Shin Seon-jo

Choi Hyo-eun

Joo Mi-ra

Kang Soo Jin

Lee Young-seon

Crew (3)

Directing

Kim Jin-man

Director

Kim Dae-jin

Director

Writing

Jin Soo-wan

Writer

Guest stars (2)

Heo Ji-woong

Omega's Editor

Seo Yi-an

Hong Ji-sun