Called to the Mosel: A caravan has gone up in flames due to arson, resulting in the deaths of two anglers from Schleswig-Holstein. The next day, four men and a dog are reported missing at Lake Laach, three of the missing are also anglers from Schleswig-Holstein. During a search operation, the bodies of the men are found in the lake, and investigators have made initial findings: The five men from northern Germany were friends. The perpetrator must possess exceptional swimming and diving skills.