A man living with his parents in a low middle-class apartment in Rio de Janeiro coldly stabs them with a razor and then goes to the movies. Marcia, a rich and dissatisfied young woman, takes advantage of a trip from her husband to go to her home in Petrópolis, where she receives a visit from an old friend, Regina.
| Actor | Role |
|---|---|
 Márcia RodriguesMárcia | Márcia |
 Renata SorrahRegina | Regina |
 Antero de OliveiraAssassino | Assassino |
 Vanda LacerdaMãe de Regina | Mãe de Regina |
 Paulo PadilhaChefe de Polícia | Chefe de Polícia |
 Rodolfo ArenaPai | Pai |
| MMaria RodriguesNot listed | Not listed |
 Carlos Eduardo Dolabella(as Dolabella) | (as Dolabella) |
 Guará Rodrigues(as Guará) | (as Guará) |