When Billy disappears in 1984, police chief Månsson spares no resources. But Reftinge's strongman, Harald, has his own idea of how to find Billy.

Vera realises that she never understood what was really going on when she was a child. Together, she and Mattias try to solve the mystery surrounding Billy's disappearance, and an old photograph of Billy turns out to be about something completely different from what Vera thought.