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Ignacio López Tarso as Prof. Ezequiel Almeyda |
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Eduardo Fuentes as Agustín Valencia |
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Adán R. Solís as Anacleto González |
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Arturo Álvarez Limón as Luis Gómez |
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René Azcoitia as Atilano Ramírez |
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Javier Gómez as Enrique Bonilla |
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Jesús Brock as Gabriel |
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Roberto Rojo de la Vega as Amado Linares |
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Humberto Dupeyrón as Agustín Romo |
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David del Carpio as Juanito Cordero |
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José Luis Ramos as Beto |
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Enrique Lucero as Prof. Robles |
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Rodolfo Villalba as Sr. Cordero |
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Manuel Vergara 'Manver' as Don Anselmo Bonilla |
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Magdaleno Barba as Sargento |
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María Bustamante as Esposa de Anselmo |
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José Chávez as Coronel |
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Armando Acosta as Soldado |
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María Teresa Orozco as Enfermera |
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Felipe de Flores as Doctor |
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Inés Murillo as Mamá de Agustín |
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Diana Ochoa as Mamá de Atilano |
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Alicia Montoya as Mamá de Beto |
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David Reynoso as The 202 |
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Agripina Anaya as Espectadora graduación (uncredited) |
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Abel Cureño as Soldado (uncredited) |
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Enrique Díaz 'Indiano' as Sr. Linares (uncredited) |
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Carlos León as Chofer autobús (uncredited) |
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Ignacio Peón as Sacerdote (uncredited) |
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Amelia Rivera as Espectadora graduación (uncredited) |
| Directing | Julio Bracho | Director |
| Writing | Edmondo De Amicis | Original Story |
| Writing | Julio Bracho | Adaptation |
| Writing | José María Fernández Unsáin | Adaptation |
| Production | Jorge Durán Chavez | Producer |
| Editing | Jorge Bustos | Editor |
| Art | Roberto Silva | Production Design |
| Art | Carlos Echeverria | Art Direction |
| Camera | Agustín Martínez Solares | Director of Photography |
| Production | Rodolfo Villalba | Casting Director |
| Art | Carlos Grandjean | Set Decoration |
| Costume & Make-Up | Josefina Cárdenas | Hairstylist |
| Costume & Make-Up | Elda Loza | Makeup Artist |
| Production | Armando Espinosa | Production Manager |
| Production | Carlos Terron Garcia | Assistant Production Manager |
| Production | Gabriel Torres Garcés | Production Manager |
| Directing | Jesús Marín | Assistant Director |
| Sound | James L. Fields | Sound Supervisor |
| Sound | Jesús González Gancy | Sound Recordist |
| Crew | Juan Muñoz Ravelo | Special Effects |
| Camera | José Antonio Carrasco | Camera Operator |
| Lighting | Gabriel Castro | Lighting Technician |
| Camera | Rafael García | Still Photographer |
| Camera | Luis Herrera | Assistant Camera |
| Editing | Joaquín Ceballos | Assistant Editor |
| Sound | Reynaldo P. Portillo | Dialogue Editor |
| Sound | Raúl Lavista | Music Director |
| Sound | Galdino R. Samperio | Sound Recordist |
| Sound | Emilio D. Uranga | Songs |
| Directing | Manuel Alcayde | Script Supervisor |
| Art | Nicolás Rueda Jr. | Title Designer |
