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 Prosecutor

Lee Beom-soo as Math Teacher

Kim Ji-woo as Ja-gyeong

Cha Ah-reum as