히든페이스: Reparto

송승헌
Sung-jin

Cho Yeo-jeong
Su-yeon

박지현
Mi-ju

박지영
Hye-yeon

박성근
Office manager

차미경
Sung-jin's mother

변중희
Ms. Park
박영준
Deputy concertmaster
주예린
Su-yeon's friend
이소영
Su-yeon's friend

Koh Na-young
Su-yeon's friend
손은호
Su-yeon's friend

윤세웅
Plumber
Seo Moon-ho
Detective

심우성
Detective
오누리
Orchestra employee

Lee Moon-bin
Chef
손주환
Driver
신재영
Old woman
Kim Yu-na
Eun-bi