Die Nagelprobe (2010)
Young archaeologist Nina never imagined that finding a medieval object in a reed bed in the Obwalden municipality of Giswil would turn her life upside down. And Baggel-Rot, Brandi-Guchs, Bichel-Botsch, Buggel-Wyyss, and Mattli-Latz would never have dreamed that it would end like this, back in Torenb