Alberto Nadal, Carlos Firulo and Luis Chávez are three intrepid police officers who are in charge of solving different criminal cases.
| Actor | Role |
|---|---|
 Palito OrtegaPrincipal Alberto Nadal | Principal Alberto Nadal |
 Carlos BaláAgente Carlitos Firulo | Agente Carlitos Firulo |
 Juan Carlos AltavistaCacho Bongiorno | Cacho Bongiorno |
 Alberto MartínPrincipal Luis Chavez | Principal Luis Chavez |
 Christian BachSuboficial Graciela Colombo | Suboficial Graciela Colombo |
 Ricardo MoránTito Bongiorno | Tito Bongiorno |
| AAlfredo DuarteNot listed | Not listed |
 Nora CullenMadre Milagros | Madre Milagros |
 Raimundo SotoEstafador | Estafador |
 Daniel MiglioranzaSargento Juan Alvarado | Sargento Juan Alvarado |
 Golde FlamiDoña Rosa Nadal | Doña Rosa Nadal |
| BBlanca del PradoDoña Maria Bongiorno | Doña Maria Bongiorno |
 Marcelo ChimentoCepillo | Cepillo |
| EEvangelina MassoniNot listed | Not listed |
| AAndrés RedondoCura | Cura |
 Alberto BelloNot listed | Not listed |
| CCoco FosattiNot listed | Not listed |
| HHéctor D'AngeloNot listed | Not listed |
 Alejandro MarcialComisario | Comisario |