Más fría que la guerra

Since 1969, humanity has suffered, in isolation, the attack of "bad trips", indestructible murderous creatures from another dimension. In 1989, Lieutenant Arturo Crespo, CESID intelligence officer, is chosen for a mission whose credibility is at the height of the contempt that his boss and his colleagues profess: to get Spain to join the Alterdimensional Defense Organization, the organization that ensures the safety of citizens against attacks of a supernatural nature.