visit

 A week after the party, return to the old place of work. Enter via the secret route through the basement, then take the six flights of stairs up to the second floor. 

This is to pay a visit to Reinhold, the man who is just disaffected and never happy at work. Have a cup of coffee and a chat. He is unhappy and has years left in the place. Perhaps he really should find a nother job, but he is too depressed now. He was at his sons wedding on the day of the farewell party, so say a special farewell to him. He is unhappy, and the Covid regulations have left him alone in his shop. He says that the machinists in the big central workshops drink to much, but they are happier and have each others company.

At eleven,go downstairs, well hidden behind the mask. Knock on the door, they are all there, the four that had made the invitation. They say thank you for the party, and thank them in turn for having been there, and for having been there in such large numbers.

They are still drinking the left overs of the schnapps bought for the party, that is good.  

Return to Landshut, stone cold sober after a single glass of social beer. 

There is no need to get on the wrong side of the police.