El Grito Sagrado (The Silent Call) is a fictionalized retelling of Argentina's fight for independence from Spain. The story is "personalized" by being related through the eyes of Mariquita Sanchez de Thompson y Mendeville, played by popular Latin American leading lady Fanny Navarro. Rebelling against the cozy traditionalism of her family, Mariquita weds tireless patriot Martin Thompson (Carlos Cores). She remains by her husband's side as he helps to fend off a British invasion and to achieve freedom for the Argentine slave population. Oddly, the principal villains in the film are the British, a reflection perhaps of Argentine dictator Juan Peron's ongoing efforts to curry favor with Spain.
| Actor | Role |
|---|---|
 Fanny NavarroNot listed | Not listed |
 Carlos CoresNot listed | Not listed |
 Aída LuzNot listed | Not listed |
 Eduardo CuitiñoNot listed | Not listed |
 Antonia HerreroNot listed | Not listed |
| NNina BrianNot listed | Not listed |
 Mario LozanoNot listed | Not listed |
 Alba CastellanosNot listed | Not listed |
| AAntonio MartiáñezNot listed | Not listed |
| AAlfredo Santa CruzNot listed | Not listed |
 Luis Medina CastroNot listed | Not listed |
| FFernando SalasNot listed | Not listed |
| JJulián Pérez ÁvilaNot listed | Not listed |
 Rita MonteroNot listed | Not listed |
 Jorge de la RiestraNot listed | Not listed |
| FFrancisco López SilvaNot listed | Not listed |
| BBlanca TapiaNot listed | Not listed |
| FFrancisco IriarteNot listed | Not listed |
 Orestes SorianiNot listed | Not listed |
 Pablo CumoNot listed | Not listed |
| PPedro AleandroNot listed | Not listed |