sentences:  Mariana's visits to the apartment bring her problems, Sara, who sees Mariana, thinks that she has a lover and begins to blackmail her with revealing everything to Luis Alberto.After a final pay out Sara accidentally kills Juan Manuel by pushing him on to a brick chimney and tries to escape the police charge her with murder.In the end the truth will be discovered when Luis Alberto, believing that Beto is Mariana's lover, tries to shoot him, but remembers the words that the private investigator told him and leaves the apartment.