Marvin is a psychotic killer, who murders people he believes are sinners, in this nice little thriller. He kills a woman in the building where Montalban and his son Perez live in Mexico City. Circumstantial evidence points towards Montalban, who is arrested for the crime. But Perez has
witnessed the murder and goes after Marvin to prove his father's innocence. The climax has the boy smashing police call boxes, leaving a trail for the cops before Marvin finds him out and captures him. The technical values are good, with the script and direction taking the story along nicely. The
acting is nothing spectacular, with the strong exception of Perez, who outshines the adu...