Thomas Bauer 
Seventh Circle [EPUB ebook] 

During the Third Reich, a German university student is the son of the most powerful Nazi. Called before the Gestapo, he is accused of violating Paragraph 175, which makes sexual acts between men illegal. He is sent to a concentration camp where he experiences horror at the hands of his Nazi captors. The discovery that it was his lover who betrayed him to the Gestapo sends him over the edge. Based loosely on a true story, "The Seventh Circle, " tells of the forgotten victims of the Holocaust, the men who wore the pink triangle. It is a timely tale on man’s inhumanity to man.