Two journalists, Carlos and Lola, investigate the murder of a young woman whose body appeared with her heart torn out, in what seems to be a human sacrifice. The investigation leads the reporters to a museum, whose director is the famous Doctor Gallardo.

• CISA
• Elena D'Orgaz
• Carlos Orellana
• Cantinflas
• Manuel Medel
• Rafael Icardo
• Tomás Perrín
• Max Langler
• Manuel Arvide