Echoes From the Dead (English)

Julia Davidson has never come to terms with disappearance of her five-year-old son Jens twenty years ago when he climbed over her parents' garden wall and walked out into the fog hanging over the Swedish island of Oland. She lives a lonely life in Gothenburg existing on a diet of pills and red wine. Then one day her 80-year-old father Gerlof, a retired sea captain, phones her and tells her he has received a child's sandal in the post and that she should come back to her childhood home on Oland to help him in his search for the truth.
The mother returns to discover that Gerlof and his elderly friend Ernst Adolfsson, a stone-worker, have been investigating Nils Kant, a man with a long history of murder and brutality, whom they suspect was involved in Jens' disappearance. But Nils died in the 1960s years before Jens disappeared, even though local people see him as a scapegoat for every nasty incident on the island. When Ernst Adolfsson is found having been crushed by a large sculpture in the local quarry both Julia and Gerlof wonder if Nils Kant has indeed returned to stop their search for the truth.

På engleska.