Inspector Thiel has to send his own father to custody: the wife of local asparagus farmer Martin Pütz was stabbed to death. And of all things, Commissioner Thiel's father was caught in the asparagus field at night. It quickly turns out that the relationship between the villagers and the seasonal workers at the asparagus farm is not particularly good. The wife of the local "asparagus king" Martin Pütz was stabbed to death. And of all things, Commissioner Thiel's father is now a suspect. Or was he just caught stealing asparagus at night? As chief investigator, Thiel first takes action: He sends his old man into custody. And he also refuses to allow forensic pathologist Professor Boerne to go it alone at the crime scene.
Turns out quicklyfound out that the relationship between the villagers and the seasonal workers at the asparagus farm was not particularly good. Two years ago, the daughter of the house, Julia Pütz, was raped by an unknown person. Since then, the Polish and Romanian seasonal workers have been under general suspicion among the locals in the Munster suburb. Now the murder of Julia's mother threatens to break the camel's back. Especially when the same DNA from back then is also found in the dead woman. While Professor Boerne is busy evaluating a series of DNA tests, Thiel sends his assistant Nadeshda ahead. In order to find out who could have a motive for murder on the farm, she is supposed to go on a search for clues disguised as an asparagus cutter.