Truly horrendous

"Two sets of wealthy parents meet for dinner to decide what to do about a crime their sons have committed." Sounds great on paper, my type of thing. What you would assume would be the main plotline of the film ends up being merely a subplot and the movie veers into stupidity on which i can't elaborate on as it would ruin the movie on the spoilers department. Having said that, i am almost certain the book that this atrocity was based on has to be vastly superior. Here's the author's take on this :

The author of the book 'The Dinner', Herman Koch, walked away from the European premiere in Berlin on February 10, 2017. He did not wish to stay for the after-party, nor talk to the director, cast members or audience. The reason was that he did not like the movie at all, mostly for the script which he thought had transferred his cynical story into a moral tale. Of the three movies made from his book, "this one is easily the worst", Koch said to Dutch newspaper NRC (Feb 11, 2017). "That after-party would have been rather awkward. What would I have done? Shake hands with everybody and tell them I hated their movie?" Koch disliked the movie's reference to themes like American violence and the stigma of mental illness. "That 'didactical' tone, isn't it killing?", Koch said.