Seo Hyun-chul

Department head • 2 episodes

So Gyeong-dong • 16 episodes

Self • 1 episodes

Hwang Kyeong-cheol • 16 episodes

Cha Ho-yeol • 12 episodes

Jeong Yong-jik • 12 episodes

Jang Rye-ji • 1 episodes

Seo Hyeon-cheol • 24 episodes

Seo Byeong-joo • 1 episodes

Seo Hyun-sik • 12 episodes

Pilot Baek

Dong-woo

Jo Pan-shik • 16 episodes

Jang Joong-kyu • 16 episodes

Joo Dong-il • 16 episodes

Yoo-jin's stepfather • 1 episodes

Jeong Hong-sik • 12 episodes

Baek Cham • 24 episodes

Chief Detective

Self • 9 episodes

Hyun-Joo's father • 32 episodes

Lim Seung-man

Oh Dae-yong • 32 episodes

Jo Hyun Suk

Yang Myung-chul • 16 episodes

Lee Sang-Hoon • 121 episodes

Hong Jin-Hong • 12 episodes

Soo Jin's father • 16 episodes

Self • 1 episodes

Deputy Department Head Seo • 3 episodes

Choi Bok • 24 episodes

In Gook • 2 episodes

Jang Sam-bong • 50 episodes

Seo Dong-jae • 20 episodes

Byung-soo • 20 episodes

Chief Detective Ko

Go Eun Pyo • 18 episodes

Ax man / Gi-seong

President Lee

Choi Kyung-rok

Technical Director • 1 episodes

Seong-Ki • 1 episodes

Park Jong-sik • 1 episodes

Client