The discovery of a human torso thrown into a waterway, leads the viewer to observe the work of modern criminology and the task of special agents to track and record the psychopath's mentality through the elucidation of techniques present in the reality of the police investigation.
| Actor | Role |
|---|---|
| MMarciano MartínNot listed | Not listed |
| PPalmira ArzubideNot listed | Not listed |
 Alfredo Wally BarrónNot listed | Not listed |
| RRichard B. CainNot listed | Not listed |
 Queta CarrascoNot listed | Not listed |
 Mario CidNot listed | Not listed |
 Marcela DavilandNot listed | Not listed |
| FFelipe del CastilloNot listed | Not listed |
| AAlejandro GuerreroNot listed | Not listed |
 Marta ZamoraNot listed | Not listed |