A chemistry teacher decides to take matters into her own hands when her brother is murdered and the police cannot help her.
| Actor | Role |
|---|---|
 Rosa Gloria ChagoyánNot listed | Not listed |
 Rolando FernándezNot listed | Not listed |
 Eric del CastilloAlfonso Alfonso | Alfonso Alfonso |
 David ReynosoComte. Treviño | Comte. Treviño |
 José René RuizReintegro | Reintegro |
 Pedro Infante Jr.La Rana | La Rana |
 Alejandro SuárezOficial López | Oficial López |
 Joaquín García VargasNot listed | Not listed |
 Paco SañudoNot listed | Not listed |
 Alfonso Zayas Jr.El Gato | El Gato |
 Agustín BernalNot listed | Not listed |
| GGuillermo de Alvarado 'Condorito'Not listed | Not listed |
 María CardinalNot listed | Not listed |