Five years ago, two 11-year-old girls, Ana and Lucía, disappeared in Monteperdido, a town in the Pyrenees. After an extensive search, the case was never solved and the town’s residents were marked by the tragedy. Now, one of the girls, Ana, has returned. Two UCO agents specializing in missing persons investigations, Santiago Baín, a lieutenant at the end of his career, and Sara Campos, a young sergeant, will work with the corporal of the local Spanish Civil Guard in this challenging investigation.
