Pirate Treasures

On the morning after the stormy tide, while walking with her brother Lukas along the shore, Emma finds an old bottle covered in seashells. Inside the bottle, there is a letter mentioning gold and jewels hidden on some island. The next day, the radio reports a sensational news: a sunken ship has been discovered on Norddeich beach! The brother and sister realize these events are connected and begin an investigation. Suddenly, the kids have competitors: escaped convicts Karman and Dilda infiltrate the ship, and they come into possession of a map indicating where the treasures are buried. Whether a pirate treasure actually exists and who will reach it first will be revealed to the reader in the fifth book of the series «Detectives of the North Sea».