In the episode "Helen Dorn - Guilt and Atonement", Hamburg LKA investigator Helen Dorn is called to a posh villa on the outskirts of the city. The dead man is a prominent figure - John Kammgardt (Ralf Bauer) is the head of the Chamber of Industry and Commerce. The wealthy businessman, who operates worldwide in the energy sector, was killed on his lavish estate by an arrow from a hunting bow. Due to the political implications of the case, Kristic (Stipe Erceg) puts the pressure on and wants to see results quickly.