Summary Those interested can wait 25 years for a berth on Lake Constance. But is that enough for a motive for murder? The quarrelsome doctor Anna Junker has been waiting impatiently for the eccentric Markus Schwarz to vacate his rickety old yacht "Holde Isolde" for a long time. Her grief is therefore limited when Anna's daughter Feli of all people finds the murdered loner in the harbor basin. The longer Nele and her team investigate, the more mysterious the case becomes. The dead man lived under a false identity on his yacht. Who was he really? The Swiss pensioner Urs Egli is also snooping around the marina - until something happens to him on the "Holde Isolde". And somehow Paul has the feeling that his old friend, the harbor master Konrad, is hiding something from him. The only people riding a wave of happiness are Mechthild and her grandson Niklas. They have marked out moorings for five yachts in front of their own house on the lake and are about to have the excavator brought in. A real gold mine... until disaster strikes.

• Crime