Three police officers. Love, jealousy, control, lies,manipulation and - betrayal. A murder. Two versions.Only one truth.Known as the Guardia Urbana Murder Case, it has causedgreat commotion in recent years in Spain. A murderthat has all the ingredients of a top thriller, but whosecharacters and settings are real: Rosa, Albert andPedro, Vilanova i la Geltrú and Roda de Berà are notinvented names, nor is the story, although at times it ishard to believe it is true. The first episode of this miniseriesoutlines the facts of the case. On 4th May 2017,investigators receive the alert of this car on the side of amountain track near the Foix Reservoir. Inside the vehicle,the Mossos d’Esquadra Police find the charred remains ofa body. Due to a prosthetic back replacement which thefire did not melt, the investigators are able to identify thevictim Pedro Rodríguez, a local policeman for the GuardiaUrbana in Barcelona. But the fire eliminated all traces ofprints and clues, making it impossible for the investigatorsto even define the cause of death. The evidence leadsthe police to investigate two suspects: Pedro’s girlfriend,Rosa Peral, and her lover, Albert López, also policeofficers. Initially, both deny the facts, but they will endup mutually accusing each other, bringing to light theintimacy of a love triangle that ended in tragedy.