Muddy hands (1988)

A dramatic story of childhood trauma and mystical bonds telling of Matthew, a young boy haunted by a traumatizing memory of witnessing a suffocation death of another child (possibly a friend or playmate). He withdraws and has nightmares about what he saw. He struggles to relive his experience through play and fantasy in the face of an increasingly hostile world while his uncomprehending parents struggle to understand him. During one of his frequent trips to a building site near his house, Matthew meets Anna, a strange mysterious girl with whom he forms a mystical bond that forces him to confront the memory that has obsessed him.