This author wrote a novel in which Hubert goes crazy after his son's death and creates a phony
 construction firm staffed by fictional Russian workers, which becomes the "Dead Souls" scandal. In that
 book the nun Sister Rahel befriends Leni Pfeiffer. The title character of another of his novels is heartbroken
 when his lover Maria Derkum marries Prelate Zupfner. This author of Group Portrait with
This author wrote a novel in which Hubert goes crazy after his son's death and creates a phony
 construction firm staffed by fictional Russian workers, which becomes the "Dead Souls" scandal. In that
 book the nun Sister Rahel befriends Leni Pfeiffer. The title character of another of his novels is heartbroken
 when his lover Maria Derkum marries Prelate Zupfner. This author of Group Portrait with Lady wrote a
 novel in which Johanna breaks out of an asylum on a mission to shoot the gym teacher Old Wobbly. The
 destruction of St. Anthony's Abbey abbey is a plot point in his novel about the Faehmel family. For 10
 points, name this German author of  The Clown and Billiards at Half-Past Nine.
This author wrote a novel in which Hubert goes crazy after his son's death and creates a phony
 construction firm staffed by fictional Russian workers, which becomes the "Dead Souls" scandal.
Heinrich {Boll}