There is a party in the house of the Reichelt family.Suddenly the guests listen to a shot.One of the guests has been killed by shooting in the sauna of the house.The victim, Klaus Groth worked as bouncer in a discotheque and had a gun permit.Lea and Jan arrive, they meet there Oliver Reichelt and his spouse Elke Reichelt,Gerd Buchwald, a functionary and his wife Sissi Buchwald.Oliver Reichelt explains that Klaus Groth was a friend of them and used to come every week to the party at this house.Oliver mentions also that they have a daughter,Miriam who knew also the victim.Jan Orlop will be in charge of speaking with her.