At the foot of the Jura Mountains in the tranquil wine-growing region between Lake Biel and Neuchâtel, two representatives of the state-preserving Citizens' Party SEBP die under mysterious circumstances within a week: Hubert Welsch is impaled in a wolf trap, and Henri Knecht succumbs to a targeted gunshot on the terrace of the Centre Dürrenmatt in Neuchâtel. Initially, a political motive is suspected. However, the investigators from the Bernese detective agency Müller & Himmel discover that there is much more at play. Then, a death list appears in a newspaper, announcing further victims...