Paris Underground

I am starting to read Paris Underground by Etta Shiber. She was imprisoned during World War II for helping soldiers escape from France. The book was in print when the war was still going, so all names were changed to protect other people facing persecution. The first time it was printed, she did not change the name of her best friend. All books were traced and destroyed, reprinted with her best friend called an alias. The copy I am reading is an original reprint after the books were destroyed and changed. I can't wait to get further into it!