Detective Investigation Files IV official wallpaper

Detective Investigation Files IV poster

Detective Investigation Files IV

(2025)

Cast

Louis Koo as 徐飞

as 徐飞

Jessica Hester Hsuan as 武俏君

Jessica Hester Hsuan

as 武俏君

Sunny Chan Kam-Hung as 江子山

Sunny Chan Kam-Hung

as 江子山

Charmaine Sheh Sze-Man as 文婉兰

Charmaine Sheh Sze-Man

as 文婉兰

Lee San-San as 唐心如 Tong Sum Yu

as 唐心如 Tong Sum Yu

Safina Lam as