The Culprit

송새벽

Lee Yeong-hoon

유선

Jeong Da-yeon

장혁진

Park Sang-min

오민석

Kim Joon-seong

한수연

Im Yoo-jeong

정해균

Detective Jo Sang-pil

Lee Soi

High School student - bit part

우미화

Da-yeon's sister

차수진

Nurse