A young, talented artist, Gloria, is found murdered in the woods. The girl’s fiancé hires a private detective, Ricardo Cupido, to investigate the crime. Taking the case, Ricardo notes several potential murderers: Gloria’s frightened cousin David, her former lover Emilio, her envious friend Camila, and a half-crazed old woman, Doña Victoria. Each of them has a solid motive. But all the detective’s assumptions collapse when, soon afterward, a teenage girl is killed in the same place in the same way.