Trigger

Park Yoon-ho

Park Gyu-jin· 10 ep

Kim Nam-gil

Lee Do· 10 ep

Kim Young-kwang

Moon Baek· 10 ep

Moon Seong-hyun

Teenage Moon Baek· 10 ep

Park Hoon

Koo Jeong-man· 10 ep

Kil Hae-yeon

Oh Gyeong-suk· 10 ep

Kim Won-hae

Cho Hyeon-sik· 10 ep

Woo Ji-hyun

Yoo Jeong-tae· 10 ep

Jung Woong-in

Yoon Won-cheol· 10 ep

Cho Han-cheul

Captain Joo· 10 ep

Ahn Se-ho

Kim Deok-hyeon· 10 ep

Cha Rae-hyung

Seo Hyeong-ju· 10 ep

Jang Dong-ju

Jang Jeong-woo· 10 ep

Son Bo-seung

Seo Young-dong· 10 ep

Hong Min-gi

Kang Seong-jun· 10 ep

Kim Joong-hee

Reporter Wang· 10 ep

Park Kwang-jae

Yong-gu· 10 ep

Kang Chae-young

Park So-hyeon [Nurse]· 4 ep

Kong Hyun-ji

Cho Se-yeong [Hyeon-sik's Daughter]· 3 ep

Lee Suk

Jeo Won-sung [Sex Offender]· 3 ep

Shin Mun-sung

Hwang Suk-min [Inspector]· 3 ep

Lee Ji-hoon

Computer Repair Shop Owner· 3 ep

Sun Woo-sun

[Psychiatrist]· 2 ep

Kim Dae-gon

Cho Woo-tae [Jeong-man's Subordinate]· 2 ep

Jeon Su-ji

[Situation Room Chief]· 2 ep

Choi Jeong-in

[Gyu-jin's Mother]· 2 ep

Gu Hyun

Lee Do (child)· 2 ep

Do Eun-bi

Ko Ji-yeong [Water Purifier Coordinator]· 1 ep

Song You-hyun

[Teacher]· 1 ep

Han Sa-myeong

[Internal affairs investigator]· 1 ep

Kim Yoon-jin

Anti-gun Supporter (eps 10)· 1 ep

Han Se-hee

Gun Supporter· 1 ep