Kung bakit dugo ang kulay ng gabi
| Year | 1973 |
|---|---|
| Country | Philippines |
| Tagline | Big! Staggering! Diabolical! |
| Director | Celso Ad. Castillo |
| Cinematography | Loreto Isleta |
| Scriptwriters | Celso Ad. CastilloMary Abelardo |
| Produced | Alona Alegre |
| Music | Jose Mari Chan |
| Genres | Horror |
| Release Date | January 13, 1974 |