I just finished reading Underground in Berlin. This was an incredibly interesting look at an aspect of the Holocaust that I was not very familiar with -- individuals that dropped off the face of the earth and "didn't exist" for the entirety of the war. If you like this era and reading non-fiction, you'll find this book very interesting! It was not the most riveting book I've ever read and the characters could be difficult to follow due to language differences, but learning more about this era was incredibly fascinating to me. Four out of five stars!