Young Henry is convinced his younger sister Lucy is a secret ninja out to get his pocket money. To ensure his money is kept safe he has come up with ten ways to protect it from Lucy. Lucy will have to be fearless and brave, among other things, to get to what she wants. I found this book to be a cute story of a sibling’s relationship with a little bit of counting included. My five year old daughter enjoyed the book a lot, she especially enjoyed Lucy’s antics. I had to mark it down one star because my younger daughter who is three didn’t like the book because she thought the monsters (who were protecting the money) were too scary. I didn’t see them that way, but I suppose it could be true for little kids. This book was rated four out of five stars.