We meet Fenna Vos as a child in Copper Country living with her father after her mother died in childbirth. Her father worked in the copper mines, and they were on strike so life was hard. Fenna meets Arie during a Christmas Party that turned deadly...a true event. A little later, we follow Fenna as she escapes from an orphanage and goes back home to live with Arie and his family. Fenna and Arie are in love, but Fenna can't marry because she said she would never be a good mother since the screams from the Christmas event of screaming children still rings in her ears. She then leaves Arie...she is heartbroken and she knows he will be too Fenna learns tricks and is in a Vaudville show when she is approached by an intelligence officer who wants her to help them defy the Germans. We follow her through the war as she helps invent gadgets for soldiers that look like one thing but could be a razor or a compass or anything to help soldiers escape. The turned down edge of the cover gives a clue about one of the clever gadgets created. Fenna was a very determined, brave girl and woman. Despite the historical aspect and the interesting facts about the inventions and the as-always marvelous writing style and extensive research of Ms. McMorris, THE WAYS WE HIDE was not that attention-grabbing for me. It moved along slowly and took a while for me to be fully engaged in the story line, but the last quarter of the book pulled me in. Those readers who enjoy historical fiction and want to learn something new will definitely enjoy this book that I think could have been a bit shorter. Her author notes give wonderful facts you won’t want to miss reading. Of special interest is the meaning of Fenna's last name. Check out the turned down corner of the cover for a clue of what’s inside. 4/5 This book was given to me by the publisher and Book Browse for an honest review.