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The corporal of the Mossos Andrea Carmona and a local police officer investigate the murder of a young man next to a mass grave that he had exhumed.

Joana, mother of David and Guillem, is overwhelmed by her father's shocking secret, the death of one son and the accusation of another; Andrea escapes a turbulent past as new evidence is uncovered about new suspects.

Andrea finds a photo of Jaume as a young man with a girl wearing an earring similar to the one found in the pit, an object that does not fit the post-war era. It turns out to be a young Belgian, Zoé Goossens, officially missing in India.