George and Ann begin this adventure alone. They go off camping and are later joined by Julian and Dick. Of course, in no time at all they are deep in an adventure. This book has it all - hidden passageways, danger, excitement, etc. I just love all of Enid Blyton's books. They are so exciting and really fire the imagination. I read them as a child and couldn't get enough. How happy I was to find them still in print through Amazon.com. Now my children are reading them too. My son, who isn't much into reading in general, has really enjoyed them. This one arrived yesterday, I read the entire thing, and I know he will love it too. How can you miss with such brave characters, and secret passageways!