Kung bakit dugo ang kulay ng gabi
| MPAA Rating: | NR |
| Genre: | Horror |
| Country: | Philippines |
| Produced By: | Alona Alegre |
| Directed By: | Celso Ad. Castillo |
| Written By: | Celso Ad. Castillo, Mary Abelardo |
| Cast: | Ronaldo Valdez, Rita Gomez, Celia Rodriguez, Alona Alegre, Liza Lorena, George Estregan |
| In Theaters: | Jan 13, 1974 |
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