Season 1

Kim Sung-kyun

Yang Jeong-ho

Kim Da-mi

Yoon Ena

Lee Joo-young

Nam Na-ri

Ahn So-yo

Yun Go-eun

Hyun Bong-sik

Choi San

Park Gyu-young

Lee Seung-ju

Hong Bi-ra

Byeon Ji-yun

Ji Jin-hee

Yoon Dong-hoon

Park Sung-woong

Kwon Sang-beom

Roh Jae-won

Hwang In-chan

Hwang Jung-min

Oh Cheol-jin

Park Seong-yeon

Kong Yeong-im

Ji Su-yeon

Cho Gi-beum

Son Suk-ku

Kim Hansaem

Kwak Ja-hyung

Roh Su-kwang

Jang Gyeok-su

Hyeon Ho-geun / Hangang Police Station Chief

Jeong Man-sik

Tae Dong-su / Captain

Kim Doh-yon

Nam Hyeok-su

Kim Ye-won

Lee Mi-young