Fernando de Fuentes' "Revolution trilogy" opens with this gripping tale of corruption and family conflict, as a powerful colonel (Alfredo del Diestro) agrees to release a revolutionary he has in custody as part of a bargain to arrest another person to take the prisoner's place. The bribe backfires when the colonel's own son is accidentally captured to seal the deal. Potent drama from Mexico also stars Luis G. Barreiro, Adela Sequeyro, and Antonio R. Frausto. 76 min. Standard; Soundtrack: Spanish; Subtitles: English. In Spanish with English subtitles.