Given its haunting, clearly rendered, and universal themes of suffering and survival in the face of absolute evil, Night is a book that is likely to be echoed or suggested in other works you encounter. In other words, it is a classic.

I'm going to limit my list to those of non-fiction;

The Diary of Anne Frank

The Hiding Place

Schindler's List

The Nazi Officer's Wife: How One Jewish Woman Survived the Holocaust

The Pianist: The Extraordinary Story of One Man's Survival in Warsaw, 1939–45