The setting of this book is great and perfect for a kid's adventure during world war II. I like the characters and the interactions within the group and picking up on the historical events and details that it was based upon as I am generally interested in history anyway. This reminded me a bit of the group in famous five. Robyn's character was particularly interesting, and she expressed a lot of bravery and the cover is nice and feels intriguing. I felt like I would enjoy this book but did however lose interest as I carried on reading and did not feel that I could read to the end. There should have been more excitement and action in this as it did not meet my expectations. My 11 year old sister also felt the same and lost interest unfortunately so I wouldn't really recommend this to the target audience either. The writer wrote well, but the story just needs a better flow.