My 8 year old daughter wants me to say "I have read all of the Famous Five books but this is my favourite. I love the fact that George is always so jealous when other girls want to be tomboys. In this case Berta, the American girl who is staying with them, would do anything to stay as a girl but needs to disguise herself to avoid getting kidnapped. I also like the fact that it's based in Kirrin, as they are always the best adventures. If you've enjoyed any of the other Famous Five books, then read this one."