Three days after her disappearance, Daria Ballhofer's lifeless body is found in Lake Constance - all signs point to murder. Daria's mother Marlene and her sister Sina suspect Daria's husband Victor who shows more interest in setting a new record in free diving, than in grieving his dead wife. What was the real state of their marriage? Why was Daria suddenly possessed by the spirits of Lake Constance right before her death? To solve the case, Luisa Hoffmann and Micha Oberländer dive deep into the fascinating world of free diving, where absolute tranquility and acute danger to life lie close together.
—Rowboat