라미란

Park Mi-young

이성경

Cho Ji-hye

윤상현

Jo Ji-chul

최수영

Yang Jang-mi

염혜란

Chief Civil Service Officer

위하준

Woo-jun

주우재

Philip

강홍석

Yong-seok

김도완

Chan-young

전석호

Detective Oh

조병규

Youngest Detective

Lee Jung-min

Chae Sook-hee

하정우

Motel Staff

성동일

Hwang Bok-hyun

이레

Young Ji-hye

안성봉

Big Man

백승환

Police Chief

소희정

Se-jin's Mother

Kim Min-kyung

Youth Division Detective

조혜주

Soo-bin

아누팜 트리파티

Arabian Subordinate

Choi Byung-yoon

Club Staff

임예은

High School Student

안창환

Kang Sang-doo

Choi Hye-jin

Back Street Nostalgic Girl

한수현

Detective Kwak

Kim Han-sang

Past Citation Moderator

박세진

Girl Cop

임현성

Cyber Investigations Police

Park So-eun

Seo-jin

Chris Lyon

Carmelo

서석규

Truck Driver in Accident

안재홍

Happy Balloons Boss

Kim Jun

Chan-woong

설창희

Seo-jin's Doctor

Kim Tae-jun

Criminal Affairs Division Civil Petitioner

배유람

Helium Balloon High Schooler

옥자연

New Pacific Suicide Female Victim

Kim Min-kyung

Woman & Youth Division Detective

정두원

Flirty Man at Club

Kim Gwang-seop

Shinchon Sunglasses Man

Song Ji-hyuk

Happy Balloon University Student

Lee Moon-bin

Guardhouse Conscripted Policeman