She's on Duty

Kim Seon-a

as

Chun Jae-in

Gong Yoo

as

Kang No-young

Nam Sang-mi

as

Seung-hee

Kim Sang-ho

as

Detective Kang

Noh Joo-hyun

as

Detective Chun

Hong Soo-ah

as

Jo Hye-ryung

Oh Kwang-rok

as

Bae Doo-sang

Moon Seo-yeon

as

So-young

Park Sang-myeon

as

Class Teacher

Kim Kap-soo

as

Cha Young-jae

Ha Jung-woo

as

Detective Cho

Choi Bool-am

as

Chief Prosecut...

Lee Beom-soo

as

Math Teacher

Kim Ji-woo

as

Ja-gyeong

Cha Ah-reum