One misty autumn dawn in a quiet fishing port in northwest Spain, the body of a sailor washes up in the harbour.
Detective Inspector Leo Caldas is called in from police headquarters in the nearby city of Vigo to sign off on what appears to be a suicide. But details soon come to light that turn this routine matter into a complex murder investigation.
Finding out the truth is not easy when the villagers are so suspicious of outsiders and sparing with their words. As Caldas delves into the maritime life of the village, he uncovers a disturbing decade-old case of a shipwreck, a ship's captain lost at sea and a mysterious disappearance.