A chemistry teacher decides to take matters into her own hands when her brother is murdered and the police cannot help her.
| Writing | Rolando Fernández | Story |
| Writing | Raúl Fernández | Story |
| Sound | Tino Geiser | Music |
| Editing | Jorge Rivera | Editor |
| Camera | Armando Castillón | Director of Photography |
| Writing | Carlos Valdemar | Story |
| Sound | Richard Moulcholske | Music |
| Directing | Raúl Fernández | Director |
