"The Hiding Place" by Corrie Ten Boom is another good one.
Corrie grew up in a Dutch Christian family. Her family hid Jews during the Second World War. One night, they were raided by the Gestapo. Corrie, her sister Betsy, and their father were arrested. Their father died in prison, and Corrie and Betsy were sent to a concentration camp. Betsy, who was in poor health already, died in the camp. Corrie survived, and went on to write her autobiography.
I will give you a heads-up - it's about as real and raw as they come. One passage that has always stayed with me was about how at one point, each woman had to strip, walk naked past ten men, and enter another room where she came out wearing a thin prison dress and a pair of shoes, nothing more. Corrie was trying to find a way to hide Betsy's sweater and vitamins, and their Bible. While watching the scene, she said to Betsy, "They took His clothes, too." Betsy responded, "Oh, Corrie, and I never thanked Him."