What starts out as a routine procedure suddenly turns into a murder case. The animal spotted floating in Lake Constance turns out to be a corpse dressed in a fur costume and wearing a carved wooden mask. Achim Tilger, the deceased, had just suffered an unprecedented business collapse.

Within the walls of the Oberzell Monastery on the island of Reichenau, stressed-out city dwellers often seek relaxation and contemplation. Bestselling author Armin König had also checked in here. But why?

The shock couldn't have been greater for Katrin Jessmann and her husband, Jost. Nele has to break the news to them of the tragic death of their son, Lasse. The surfer drowned—and was apparently struck by a boat.