82 mins | Drama, Crime, Thriller, Mystery | June 15, 1972
82 mins | Drama, Crime, Thriller, Mystery | June 15, 1972
| Producers | Alameda Films |
| Original title | Triángulo |
| Directors | Alejandro Galindo |
| Writers | Max Aub, Alejandro Galindo |
as Dr. Pedro Millán
as Diana Avelar
as Teodora
as Miguel Escontría
as Irene
as Mario
as Inspector Sergio Álvarado
as Inspector Ojeda
as Doctor Romulo Miranda
as Directora del Internado
as María de la Encarnación
as Psiquiatra Arana
as Abogado de Diana
as Mesero