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Iceland, 1956. Fifteen-year-old Laura decides to spend the summer working for a couple on the small island of Viday, off the coast of Reykjavik. In early August, the girl disappears without a trace. Time passes, and this mystery becomes the most infamous unsolved case in Iceland. What happened to the girl? Is there any chance of finding her alive? Or did she simply leave the island?

Thirty years later, as the city of Reykjavik celebrates its 200th anniversary, journalist Val Robertsson begins his own investigation into Laura's case. But as he gets closer to solving the mysterious disappearance, it becomes clear that Laura's disappearance is a mystery that someone is determined to keep unsolved...

As the story unfolds, the city of Reykjavik celebrates its 200th anniversary.