There is very little sex in this book, and lots and lots of death. There are two or three mentions of sex, but none of them are all that explicit or sexy. First, in the train on the way to Auschwitz, some of the young people "caress" each other in front of everybody. Are they having sex or just making out? Not clear. Second, Eliezer observes Idek, the one in charge of his block at Buna, making love to a young Polish girl. Realizing that Idek had moved 100 prisoners from camp to the workplace just so he could sleep with her, Eliezer laughs out loud. Later, Idek punishes him. Lastly, there is one brief mention of how there is some trafficking of young boys among homosexual SS officers, but Eliezer only learns out this after he is liberated, so there are actually no actual details presented.