A young detective solves the theft of some plans from an arms factory.
| Actor | Role |
|---|---|
 Ricardo Castro RíosInspector Ricardo Leiva | Inspector Ricardo Leiva |
 Beatriz TaiboAlicia Herrera | Alicia Herrera |
 Julián BourgesAlberto Herrera | Alberto Herrera |
| CCarlos FioritiSoto | Soto |
 Marcos ZuckerFélix | Félix |
| JJuan CarraraComisario | Comisario |
| DDora FerreiroSecretaria del Sr. Herrera | Secretaria del Sr. Herrera |
 Aurelia FerrerJuana | Juana |
 Fernando CamposDiariero | Diariero |