This book was kind of boring for the first half. I kept waiting for the setup to end and for the action to start. Even now that Lina & Doon finally figured out the "Instructions", there still isn't much action. I am reading this with my 11-year old son for his 6th grade outside reading project. We had to pick from a list of "Contemporary Classics". I'm thinking we didn't make the best choice, but it's almost over now.