Elenco - The World of Silence
김상경
Ryu Jung-ho
박용우
Det. Kim Hyung-sa
한보배
Park Soo-yeon
이종수
Detective Choi
정일우
Ryu Jung-ho (young)
함은정
Kim Min-hee
한수연
Jung Yoo-jin
정규수
Jo Ban-jang
오정세
Chang-bae
Song Boo-gun
Chang-Bae's group 1
Kwak Min-seok
Tourist 2
Jo Hyun-wu
Firefighter 2
Kim Dong-ha
Guy sitting in the next table
Son Bum-soo
Moderator
정해균
Min-hee's home room teacher (voice)
황택하
Hostage
Jung Yoon-seo
Madam at Western Style House
Jo Yeon-ho
Suicidal man
Kim Jin-kook
Detective 5
Kim Chae-hyun
School play female MC
Oh Jeong-won
Park Soo-yeon's mother