This was such a fascinating book. It takes place in Poland during WWII. In college I studied abroad on a trip called The Holocaust Journey & we visited many sites in Poland that are mentioned in the book including what was the Warsaw Ghetto & Treblinka. I fell in love w/ Poland when I was there & I always look for books/films/documentaries on it. Irena is a great heroine & apparently was a real person. I couldn‘t put this book down & learned a lot