A Witness Out of the Blue
- Release Date: 2019-10-12
- Runtime: 1Hours 44Minutes
- Language: Cantonese.
- Director: Andrew Fung Chih-Chiang.
- Production Companies: One Cool Pictures , Big Honor Entertainment , Lian Ray Pictures
, Sun Entertainment Culture , Media Asia Films 
, Tao Piao Piao 
, China Film Media Asia Audio Video Distribution .
