I have not read a more disturbing book so far. It started out innocently enough as what is too be a very interesting dinner between two couples. The narrator, Paul Lohman comes across as a pretentious snob, but nothing more. His snark is almost comical. 
 As the dinner unfolds you discover the reason for the meeting. Paul and the other couple's sons have made a video of a murder of a homeless woman. They want to figure out how to deal with it as the repercussions are grave. The deeper you traveled into Paul's mind the more you realized that he is not who he believes he is. And neither is his wife Claire as she acts out in some spectacularly unexpected and unsettling ways. Herman Koch's mastery of shrouding the characters' true selves until the end was fantastic.