맨홀

정유미

Yeon-seo

Kim Sae-ron

Soo-jung

정경호

Soo-chul

최덕문

Kim Jong-ho

조달환

Pil-gyu

이영유

Kim Song-yi

윤찬영

Soo-chul (Young)

김빈우

Female Victim

윤돈선

Policeman

Jun Yoon-ji

Bakery Part-time Worker

김재화

Social Worker

Seo Kyung-hwa

Yeon-seo's Mother

고다연

Soo-chul's Older Sister

신동력

Soo-chul's Father

서현우

Male Police Officer

김미희

Female Police Officer

Ha Ji-eun

Woman in Haengdang Area

김아람

Mummy

윤태인

Man of Couple

Song In-seop

Cellphone Man