SPA, 2019-2021 (2 seasons) - DLO Producciones

Two 11-year-old friends, returning home after school, disappear in the Monteperdido Valley, a city surrounded by the lush nature of the Pyrenees. Five years later, one of the two girls is found unconscious after a car accident in which the driver lost his life. Two agents of the Central Unit of the Guardia Civil, Sara Campos and Santiago Baín, are called from Madrid to try to solve the complicated case, until then entrusted to the local police commander.