An engaged couple discovers the corpse of a woman killed by strangulation in the Santo Amaro dam. Inspector Castro and his assistant, Pedro, start the investigation, collecting testimonies, and find a phone number with the name Conceição in the victim's pocket.
| Actor | Role |
|---|---|
 Helio SoutoInspetor Castro | Inspetor Castro |
 Norma BengellDalva | Dalva |
| MMiriam RonyMíriam | Míriam |
 Walter AvanciniBebeto | Bebeto |
| AAnnik MalvilLili | Lili |
 Celso FariaLúcio | Lúcio |
 Américo TaricanoPedro | Pedro |
 Mário BenvenuttiNot listed | Not listed |
 Clery CunhaNot listed | Not listed |
 Marthus MathiasNot listed | Not listed |
 Dirceu ConteNot listed | Not listed |
| CCarlos FarahNot listed | Not listed |
| JJosé Júlio SpiewakNot listed | Not listed |
 Emiliano QueirozNot listed | Not listed |
| IItamar BorgesNot listed | Not listed |
| LLima NetoNot listed | Not listed |