Health insurance inspector Stefan Sander's corpse, burnt by the road and found by a farmer but fatally beaten with a partridge, leads the team to the country's oldest naturist society, which he helped ward off land owner Michael Gruber's attempts to chase or buy them out by obtaining recognition as national heritage. Sander also blackmailed club president Christian Funke's GP Martina Wagner for the patient files of Christian and his late twin brother Ralf. Dominik does a stake-out to catch the person who 'borrowed' Sander's van and affixed fake number plates.
—KGF Vissers