Identical twins, Mariana and Marguerite, cause fascination and disturbance in those around them. In appearance they are the same, but their personalities are strangely different. Intertwined in their lives is the Marques de Mansura, who seems to defy time and the normal bounds of reality and whose fascination with identical twins contains the perverse wish to induce the annihilation of one twin by the other. His powerful...