Aired: 6/8/2015
The detectives return to their territory in Herblingen, which Gabriel describes as the "Lugano of Northern Switzerland."
Aired: 6/9/2015
A debate about the correct tipping etiquette for coffee leads to questions about the economic value of their work.
Aired: 6/10/2015
An old radio is found at an illegal dump site. Gabriel begins a forensic investigation involving DNA and fingerprints.
Aired: 6/11/2015
The team deals with the difficulties of waste disposal near the border and the differences between Swiss and German trash.
Aired: 6/12/2015
A dead guinea pig wrapped in a newspaper is found in the forest. The question arises: how does one dispose of a pet correctly?
Aired: 6/15/2015
A trail of dog waste bags through Herblingen inspires Michel to come up with a new business idea.
Aired: 6/16/2015
While Oli tries to start smoking, the detectives find ultrasound images in the trash, leading to dark suspicions.
Aired: 6/17/2015
A sample from an underground container leads the detectives to the local post office and their surveillance cameras.
Aired: 6/18/2015
The season finale: Gabriel reflects on his career while a fox – or nature itself – is identified as the ultimate litterer.