임수정

Yoon-jung / So-eun

조정석

Ji-hwan

Lee Jin-wook

Detective Gun-woo

Jung Jin-young

Detective Kang

이기우

Detective Lee

온주완

Teacher Park

Lee Tae-ri

Kang Seung-bum

전신환

Biology Teacher

김보라

Choi Hyeon-ju

Shin Ji-soo

Nice Schoolgirl

정웅인

Kang Hyeong-chul

김원진

Detective Yeo-ju

임예진

Vice Principal

박준규

Real Estate Man

Kang Bo-min

Hostage Woman

Yoon Byung-hee

Player

Han Hee-jung

Present Pickpocket Woman

Lee Sae-ro-mi

Teacher

최원

Seogyeong High School Male Teacher 3